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Gluten Free Zucchini Slice

by Adrianne

Gluten Free Zucchini Slice which is easy to make and tastes delicious. This flourless zucchini slice is a healthy recipe made with raw vegetables, bacon and eggs!

Gluten Free Zucchini Slice pieces in a white baking tray with small utensil on the side

Gluten Free Zucchini Slice with 6 easy ingredients!

Everyone will have tried a zucchini slice in their day. Whether is is your mother’s favourite that comes to mind or one with a modern low carb, keto or paleo twist, there is something about a zucchini slice that makes it loved by all.

This flourless gluten free zucchini slice recipe  uses only 6 ingredients. It is the kind of recipe you can whip up in a flash and pop in the oven whilst the house is full of hustle and bustle.

The recipe has no flour and no pastry base, you could call it a flourless zucchini quiche or frittata if you wish!

Bacon, corn, zucchini, eggs, cream and cheese are all that it takes to make this quick and easy gluten free vegetable slice!

A good old fashion zucchini slice is versatile, great for kids, work, dinner or a gathering amongst friends. I think that is one of the reasons it is so popular.

How do you make Gluten Free Zucchini Slice?

It is very easy to make a gluten free zucchini slice.

We begin by preparing our zucchini (which is called a courgette in the UK) and shredding or grating it. These days with so many grocery stores catering to our busy lifestyles, you are able to purchase pre shredded zucchini quite commonly. So that is alway an option to consider if the thought of washing your food processor has you running for the hills!

Use can also use a box grater or hand held grater. The fact is we need 4 cups of grated zucchini and that will come from approximately 5 small zucchinis.

I go into more detail about this in the recipe, but whilst we are on the topic, I recommend more smaller zucchinis as opposed to fewer larger ones as they have the potential to be a very wet ingredient and no one wants mushy slice!

The Simple Steps to Make Zucchini Slice are:

  1. Preheat your oven (it will take a lot less time to cook if you do this) 
  2. Spray a baking dish with cooking oil
  3. Top and tail your zucchinis
  4. Grate your zucchinis
  5. Crack your eggs
  6. Whisk your eggs and cream together
  7. Layer zucchini, corn, bacon and cheese into baking dish
  8. Pour in egg mix
  9. Bake in oven

I like to keep some of my quick and easy dinners basic and this is a classic easy peasy zucchini slice.

What ingredients are in a Zucchini Slice?

There are so many options to make zucchini slice particular to your taste preferences, but most recipes have some common ingredients.

More often than not, you will find recipes with eggs, milk or cream, vegetables, cheese and sometimes flour. Whilst you can make a gluten free zucchini slice by using gluten free flour, this recipe is a flourless zucchini slice. 

If you have a look you can see the ingredients that we will be using to make our zucchini slice and you will probably be amazed that such a popular recipe can have such simple household ingredients!

The ingredients for our Gluten Free Zucchini Slice are:

  • Bacon (diced) 
  • Eggs (free range) 
  • Cream
  • Corn
  • Mozarella cheese
  • Zucchini (shredded)

You can add any vegetables you like if you love this recipe and want to make it often with some versatility.

What can I add to my Zucchini slice?

  • Carrot
  • Shallots (green onions) 
  • Peas
  • Capsicum
  • Or leave the bacon out for a vegetarian zucchini slice!

You might even want to make a gourmet zucchini slice and try a fancy cheese like feta, ricotta or goats cheese (they do sound fancy, don’t they! Oh la la!)

Ingredients for gluten free zucchini slice recipe

How do I make my Zucchini Slice Gluten Free?

Whether not not you use an oven or thermomix to make your zucchini slice, the key to removing the gluten is to ensure all of our ingredients are gluten free.

Luckily, I can assure you that our combination of ingredients is suitable for those with celiac disease  or those who wish to eat more gluten free foods.

If you want to get into the habit of eating more gluten free foods, you can start with this recipe and expand to cook your own gluten free vegetable slice on a regular basis.

How do I make the Best Zucchini Slice Recipe Ever?

There are bakery products that I am sure you have come across that are so bad that they are good. (Stick with me  friends…)

n particular in Australia we have a product sold at the grocery store which is a bacon and cheese bread roll and they are extremely popular!

The bacon on top is hard and chewy. The bread is doughy and soft and has a mound of cheese on it. They are seriously not an every day food! So we take inspiration from them and we use that inspiration to make a healthy zucchini slice recipe.

Making the best zucchini slice ever involves a trick

I know some folks would think that in this recipe I am going to tell you to mix the zucchini, corn and bacon in a bowl and then pile it all into our baking dish. But you need to hold that thought my friend, as I am not!

There are 2 reasons for that and the 1st is because sometimes, most of the time, ok all of the time, I am not that into cleaning up. So I am not going to tell you to mix stuff together in a bowl, as if you are like me, I think you probably get a bit over it too at times. No sir, no mixing bowl my friends, we don’t use one (reason 1).

Reason 2 takes us back to that bacon doughy bread roll I was on about. The reason why that works is because the bacon is on top of all of the other ingredients in there and hence cooks up nicely in the oven.

So, my friends to make the best ever zucchini slice with chewy bacon, we don’t use a mixing bowl and we put our bacon on top so that you will stand at the bench like I did and eat the little crispy bacon bits that fall off as you slice and dice.


Gluten Free Zucchini Slice raw ingredients in a blue baking dish

Bacon Zucchini Slice recipe is healthy, nutritious and delicious!

Adding the bacon to the top of the zucchini slice will ensure it cooks well and you have chewy bacon bits to chow down on!

As always, please check the nutritional information in my recipe card to gain an insight into the nitty gritty details of each of my recipes.

You may want to have 2 pieces of the slice for a meal depending on your portion size preference.

FAQs to cook your Bacon and Corn Zucchini Slice

  1. Use smaller zucchinis to ensure less water in the slice
  2. Don’t cook the bacon, corn or zucchini before adding it to the slice
  3. The slice will take 45 mins to cook
  4. Mozarella or light grated cheese is perfect
  5. You can freeze and reheat this recipe
  6. The slice needs to cool down for a couple of minutes before being cut


Gluten Free Zucchini Slice pieces on white background

Bacon Corn Zucchini Slice quick info:

About the recipe:

  • Use salt and pepper to season before eating but not in the recipe
  • If you have a lot of liquid in your zucchini use paper towel to squeeze some out
  • The zucchini slice is perfect hot or cold
  • This is a great way to get extra veggies into your or your kids diet

Your quick questions answered:

  1. Gluten Free Zucchini Slice has only 6 ingredients
  2. Check the baking dish dimensions in the recipe to ensure a thick slice 
  3. The slice can be cut in small squares or rectangles
  4. This recipe has no flour
  5. This is an EASY recipe

Troubleshooting Zucchini Slice tips:

If you are new to cooking zucchini slice keep in mind:

  • make sure there is no wet egg wobble in the centre of the dish (when cooked) 
  • leave the slice to cool before cutting it

If you make this recipe and want to upload a photo (I would love to see) you can do that via the pin on my recipes board >> Sweet Caramel Sunday Recipes board  >> Pinterest

Gluten Free Zucchini Slice pieces in a white baking tray with small utensil on the side

Gluten Free Zucchini Slice

Gluten Free Zucchini Slice which is easy and delicious. This flourless zucchini slice is a healthy recipe made with raw vegetables, bacon and eggs.
4.85 from 19 votes
Print Rate
Course: Breakfast, Dinner, Lunch
Cuisine: Australian, International
Keyword: eggs, gluten free, low carb
Prep Time: 10 minutes
Cook Time: 45 minutes
Total Time: 55 minutes
Servings: 16
Calories: 178kcal
Author: Adrianne


Gluten Free Zucchini Slice

  • 4 cups shredded zucchini Note 2
  • 400 grams corn kernels drain and rinsed
  • 300 grams diced bacon
  • 3/4 cup mozzarella cheese
  • 3/4 cup cream
  • 8 eggs Note 1


Gluten Free Zucchini Slice

  • Preheat oven to 200°c/400°F, gas 6
  • Spray a baking tray with cooking oil Note 3
  • Cut the top and tail off the zucchini and use a food processor (shredder blade) to shred your zucchini Note 4
  • Cover the base of the oiled baking tray with the grated zucchini (spread it out a bit)
  • Sprinkle the corn over the zucchini layer
  • Top the corn with the bacon pieces
  • Sprinkle your mozzarella cheese over the bacon pieces
  • Use a fork or hand held stick blender to whisk your eggs, add your cream to these and ensure consistency is smooth
  • Pour egg mix over baking tray starting at one corner and moving around so that the liquid spreads out
  • Place baking tray in the oven for 45 mins
  • Leave to cool slightly before cutting Note 5


  • Note 1 I always use free range eggs and recommend you do too. They are fresher, tastier and better for the chickens. For the little extra cost, I think you get much better bang for your buck with free range 
  • Note 2 For this recipe, I recommend using smaller zucchinis to avoid excess moisture in your slice. I used 5 small ones which made 4 cups grated zucchini. You are better off doing this than using 2 large ones 
  • Note 3 The size of your baking dish WILL make a difference for this recipe. I used a 31.5 x 26 x 5.5 cm (capacity 2.2L) porcelain roaster. The actual type of dish won't matter ie you could use a skillet, a baking tray, a slice tray. BUT, the recipe is designed so that you get a thickish piece of slice. If you use a bigger tray than the one I did, you will get a thinner slice. You can use a smaller one ( ie my skillet is 26cm, but when I use that I only do 6 eggs). I would recommend you use something similar to the measurements in either of these 2 dishes. Obviously don't run out and buy anything just for one recipe or because you worry it needs to be that size. There is flexibility in the recipe for different uses of dishes, but what would not be a good idea is for you to use a 35 cm casserole dish for example. It will be too large and your slice will be as thin as an omelette. If using a much smaller baking tray or slice tray, you can use 6 eggs and if you do this, I recommend using 1/2 cup cheese and 1/2 cup cream not the 3/4 that we use when we have the 8 eggs. 
  • Note 4 Using the food processor to shred your zucchini is fast and your hands stay clean, but it adds to the washing up. You can use a hand held grater to avoid this and these days you can also buy pre shredded zucchini at most local grocers. 
  • Note 5 Your slice edges will be much straighter if you let the slice cool before cutting it. Use a sharp knife and rinse with hot water in between cuts. 


Calories: 178kcal | Carbohydrates: 6g | Protein: 13g | Fat: 12g | Saturated Fat: 7g | Cholesterol: 128mg | Sodium: 680mg | Potassium: 158mg | Fiber: 1g | Sugar: 2g | Vitamin A: 390IU | Vitamin C: 6mg | Calcium: 52mg | Iron: 0.7mg
Did you make this recipe? Share on Instagram!It makes my day when you make my recipes! Tag @sweetcaramelsunday

Close up of Gluten Free Zucchini Slice pieces

Zucchini slice gluten free cut pieces


Side on image of gluten free zucchini slice

Hola for a dollar!

This is my way of saying help out a friend in need. My way to do that for you my friend is to give you another suggestion that you can add to your cookbook! (Fist bump) 

You might like this Pumpkin Frittata with Ricotta Cheese recipe. It is quite similar to this zucchini slice and you can see how I have used a different baking dish to give you the idea of a round skillet cooked egg dish versus a square baking dish version.

Adrianne xx


  1. Meatball Tomato Soup (also gluten free) 
  2. Chicken Thighs in Creamy Garlic Wine Sauce (also gluten free) 
  3. Blue Cheese Mac and Cheese
  4. Beef Bean Pasta Bake
  5. Minestrone Soup

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Milica Vladova July 2, 2019 - 7:58 am

5 stars
Excellent summer dish! Thank you for the suggestion, Adrianne!

Adrianne July 2, 2019 - 8:04 am

You are welcome Milica! Glad you like the recipe. Cheers

Karen November 13, 2019 - 1:14 am

Hi Adrianne – how many days will this stay fresh in the fridge please? Karen

Adrianne November 13, 2019 - 1:30 am

Hi Karen,

5 days. It is perfect to make and then have in the fridge for left overs.

My usual routine is to make it on a Sunday and have it for lunch for the next 4-5 days. Any longer and I would recommend freezing it.


Jacqueline Debono July 2, 2019 - 8:32 am

5 stars
I’ve never made a zucchini slice. I often make zucchini quiche with fried zucchini and sometimes bacon. But that has pastry of course! I like the idea of grating the zucchini and not using flour! Going to pin for later!

Adrianne July 2, 2019 - 9:04 am

Sounds great, thanks Jacqueline. Your zucchini quiche with fried zucchini and bacon sounds delicious!

Lisa January 24, 2020 - 9:00 am

5 stars
Thank you, thank you, thank you, Adrianne. This is the most successful Zucchini Slice I’ve made in many years. I had to swap some ingredients out as I don’t eat dairy (cows milk) or corn. I love the minimalist mixing of the ingredients. My kind of recipe. This is definitely a keeper.

Adrianne January 24, 2020 - 9:19 am

You are so very welcome Lisa! Your additions sound tasty. Thanks for the comment and compliment. So glad you enjoyed it and hope you have a great weekend!

Tisha July 2, 2019 - 8:58 am

5 stars
We love zucchini! Finding new recipes to use up the ones we have is so great! Definitely looks like something the whole family will love!

Adrianne July 2, 2019 - 9:12 am

Sounds great Tisha! Hope you try it and enjoy it!

Karen November 11, 2019 - 6:21 am

Hi Adrianne – how many days will this stay fresh for if kept in the fridge please?

Adrianne November 13, 2019 - 1:32 am

Sorry, I just saw this comment today, but have answered in your comment above. Thanks Karen!

Maayke July 2, 2019 - 9:00 am

5 stars
I can’t wait to try this recipe, it looks amazing!

Adrianne July 2, 2019 - 10:07 am

Sounds great Maayke! Hope you love it.

Amanda Wren-Grimwood July 2, 2019 - 10:32 am

5 stars
This looks so delicious and much deeper than a quiche or frittata too. Looks perfect for lunches or with salad for dinner.

Adrianne July 2, 2019 - 11:21 am

Thanks Amanda! Yes, I made a heap of frittatas usually so I thought I would switch it up, thanks!

Paula Montenegro July 2, 2019 - 10:36 am

5 stars
Wow, the fluffiness of that first image! I’m loving this recipe. And it also has corn, one of my favorite ingredients ever. I’m pinning this one!

Adrianne July 2, 2019 - 11:42 am

Love your positive feedback Paula! Woot woot, corn is the best!! Aww thanks for the Pin! Cheers

Veena Azmanov July 6, 2019 - 5:07 am

5 stars
I love the healthy option to making this yummy slice. Combination of ingredients yummy. Cheesy awesome. I love it.

Adrianne November 13, 2019 - 1:32 am

Cheers Veena, appreciate your feedback!

Jessica July 6, 2019 - 12:24 pm

5 stars
I just love this idea! It’s perfect for serving at brunch, so I’m definitely making it for our next Sunday get together!

Adrianne September 1, 2019 - 3:51 am

Great to hear, thanks Jess!

Kristina July 6, 2019 - 12:46 pm

5 stars
This will be my next brunch main dish! Love the added zucchini and corn to incorporate vegetables at brunch!

Adrianne September 1, 2019 - 3:51 am

Cheers Kristina, that is great to hear!

Marcellina July 7, 2019 - 10:29 pm

5 stars
I love zucchini slice! But I have never thought to make it without the flour. Great idea!

Adrianne July 7, 2019 - 10:54 pm

Thanks Marcellina. Hope you are still cooking up a storm!

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Adrianne August 2, 2019 - 12:37 am

Thanks guys, for sure if you want to come to QLD from NSW and do my lawn I won’t stop you, cheers!

Jeff the Chef July 30, 2019 - 1:59 pm

Well, I’ve actually never had a zucchini slice. I’ve never even heard of it. I guess I’ve lived a sheltered life. Anyway, they sure do look delicious. I love the way you’ve placed them into the pan – very attractive. And I love the ingredients you’ve used. They sound delicious.

Adrianne August 2, 2019 - 12:36 am

Thanks Jeff for stopping by and leaving such great feedback. No worries. I hope you give it a try sometime! Cheers

Chocoviv August 10, 2019 - 6:24 pm

5 stars
Looks good!

Adrianne August 10, 2019 - 6:30 pm


Jamie August 28, 2019 - 5:51 pm

5 stars
I can’t get over how fluffy these are! This is such a great idea for getting in some veggies for breakfast!

Adrianne August 28, 2019 - 11:10 pm

Thanks Jamie!! Yup all the fluff in there haha. Cheers

Shruti Aggarwal September 7, 2019 - 8:09 am

Amazing! This looks delicious. Going to try this tonight, thanks for sharing this recipe. Btw pictures are awesome!

Adrianne September 8, 2019 - 12:01 pm

No worries Shruti! Thanks for popping by my blog. Hope you love it!

Emese September 23, 2019 - 8:18 pm

5 stars
This would be the perfect breakfast for me. I am always looking for GF recipes, and I love when I came across a flourless one. Thanks for sharing.

Adrianne September 23, 2019 - 9:05 pm

No worries Emese thanks for your feedback . Appreciate it.

Anonymous September 25, 2019 - 8:41 am

5 stars
Love this gluten free zucchini slice recipe, will definitely be giving this a whirl ?

Adrianne September 25, 2019 - 12:58 pm

Glad to hear that, how you love it!

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Adrianne November 3, 2019 - 12:11 am

Bit to far to travel to Sydney for a reno, cheers!

Adrianne November 30, 2019 - 9:27 pm


Anita December 15, 2019 - 1:11 pm

5 stars
This was so good and super delicious. Bring one to a pot luck and there was no leftover, and have several friends asking for the recipe. 🙂

Adrianne January 10, 2020 - 8:23 am

Great to hear, thanks Anita!

beautifulwanderlustlifestyle. December 21, 2019 - 5:43 am

5 stars
Thank you for sharing such a yummy recipe. Please keep sharing more.
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Adrianne January 10, 2020 - 8:25 am

You are welcome, great to hear you enjoyed it, cheers!

Heather January 10, 2020 - 4:30 am

2 stars

Great topping!
I was excited at the thought of making this and loved the idea of the cheesy, bacon bits on the top. However apart from those yummy bits made extra delicious with fresh corn from the cob, the slice was a huge disappointment. I used delicious free range eggs and zucchini from my friends farm, added carrot, salt and pepper but it was watery and tasteless under that top layer. Maybe the zucchini were a little large (perhaps you could indicate what you consider to be a small zucchini), but I strained them and squeezed out excess water. I think mixing the ingredients together would help with the flavour and it really doesn’t make more dishes, just use a larger bowl and add everything to your egg mix. Add extra cheese and bacon on top, because that was an inspired idea. As I don’t need to avoid gluten, I will also add 1tbsp flour to help it bind together.

Adrianne January 12, 2020 - 2:24 am

Hi Heather,
Thanks for visiting my blog and taking the time to leave a comment. Firstly thanks for the compliment about the cheesy bacon bits, they are indeed delicious. You indicate that you have used corn from the cob which we all know is pure bursts of absolute delight (yum, right). Then you have said you also added carrot, salt and pepper. These alterations sound to be to be extra delicious and tasty. Carrot – got to love it. Zucchini from your friend’s farm, yum, I wish I had a friend that grew zucchini. Yes, I can imagine they would have been large zucchini and no doubt needed the squeezing you mention you did. Then you conclude with saying you will add flour to bind, so as that is in the future tense not the past, I am now not altogether sure that you actually did make the slice? From what you have said with adding the corn, the carrot, salt and pepper it sounds like a few changes that would make a superb veggie packed slide. Those pops of corn in your mouth after cooking in the oven would be fantastic. If that was a typo and you did make it, not so much read it and offered your thoughts about how it could be improved, I recommend you have a look at this recipe https://sweetcaramelsunday.com/zucchini-slice-muffins/ as it is similar yet using different techniques than this recipe here. It might be that you prefer an egg based slice that uses a difference method to make it. You could also try this one https://sweetcaramelsunday.com/bacon-and-egg-slice/. You and I both seem to love free range eggs, zucchini and all of the veggies, so I think we will be able to find a solution. Hopefully you try another recipe and are pleasantly surprised by using different techniques for similar combinations of ingredients. Cheers Adrianne

Katerina January 17, 2020 - 11:37 am

Great recipe to use up all that zucchini I am drowning in at the moment! Thanks for sharing.

Adrianne March 29, 2020 - 12:05 am

I am a bit jealous Katerina! I wish I was drowning in Zucchini!! For a non Gluten Free version of this slice to use up all those veggies, you might enjoy this recipe: https://sweetcaramelsunday.com/zucchini-slice/ Cheers!

Marcellina February 9, 2020 - 10:32 am

5 stars
I love zucchini slice and your version is really lovely because it’s so much like a frittata. I’m definitely going to try it!

Adrianne February 10, 2020 - 11:21 am

That sounds great, thanks Marcellina! I hope you love it! Cheers

Adrianne March 29, 2020 - 12:12 am

Hey Marcellina, I just realised, I also have a Zucchini Frittata recipe you might like as well, it is https://sweetcaramelsunday.com/zucchini-frittata/ Thanks! x

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