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Two sliced blondies with m and m's and chocolate stacked on a white plate,
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5 from 2 votes

M And M Blondies

M And M Blondies are a fun, colorful treat with crunchy peanut butter m and m's as well as chunks of chocolate chips. Quick, easy, delicious!
Prep Time10 minutes
Cook Time35 minutes
Total Time45 minutes
Course: Dessert, Treat
Cuisine: Western
Keyword: m and m blondies
Servings: 16
Calories: 401kcal
Author: Adrianne

Ingredients

  • 1 cup brown sugar Note 1
  • 1 cup white sugar Note 2
  • 250 grams/2 sticks butter unsalted, Note 3
  • 2 large eggs free range, Note 4
  • 2 teaspoons vanilla Note 5
  • 2 cups plain flour no need to sift
  • 1 cup m and m's Note 6
  • 1 cup milk chocolate chips Note 7

Instructions

  • Preheat the oven: preheat the oven to 180°C / 350-375°F / Gas Mark 4-5.
  • Baking dish: lightly grease a square (24 x 24 cm or 9.4 inch) baking dish with cooking oil then line it with 2 overlapping sheets of baking paper with a 2-3 inch overhang on each side.
  • Sugar and butter: add each of the brown sugar and white sugar to a large mixing bowl. Then transfer the butter to a heatproof jug and heat in the microwave using the high setting for 30 second increments till melted (around 1 ½ minutes). Once the butter is melted, use an oven mitt around the hand of the jug and remove it from the microwave. Set it on a heatproof surface and use a spatula to give it a gentle stir. Let it cool for a minute or so (use this time to crack the eggs into a small bowl). Then pour the melted butter into the bowl and stir until consistently combined.
  • Vanilla and eggs: next add the eggs and vanilla to the bowl and stir till consistently combined.
  • Flour: then add the flour to the bowl and stir till it is mixed in with no visible flour at the bottom of the bowl.
  • Mix ins: next pour the m and m's and chocolate chips into the blondie batter and gently stir to fold these in.
  • Transfer: transfer the combined blondie batter into the prepared baking dish. Then use a spatula to push it so that it is in a reasonably even layer and fills all 4 corners of the dish.
  • Bake: place the blondies into the oven (middle shelf). Bake them for 35 minutes. Once the cook time is up, use oven mitts to remove them from the oven and set them onto a heatproof surface.
  • Cool: rest the blondies in the baking dish still for 20 minutes. After this time, grab the overhanging parchment paper and lift the slab up and out of the baking dish. Place this onto a cooling track and let them cool for a further 20 minutes.
  • Portion: transfer the blondies slab to a clean, dry cutting board. Use a sharp knife and cut this into 16 equal pieces.

Video

Notes

  • Note 1 - Brown sugar: for an even softer, more moist filling you can use 2 cups of brown sugar in place of the 1 cup of white and 1 cup of brown sugar. It will change the texture of the blondies though. The main thing you will notice is that the filling or centres will be more soft and the top won't have that flaky/crisp crackle to it. 
  • Note 2 - White sugar: as above. Although this time if you omit the brown sugar and only use white then you will loose a bit of the soft butterscotch taste that the brown sugar delivers. 
  • Note 3 - Butter: unsalted is recommended as the nuts provide a little salt. If you want to use no nuts at all in the recipe then you can add a pinch of salt. 
  • Note 4- Eggs: these don't need to be at room temperature, nor do they need to be whisked before adding them to the bowl. 
  • Note 5 - Vanilla: you can use vanilla extra or vanilla essence. Don't let anyone talk you down about how the cheaper version is synthetic. It maybe but we are in a cost of living crisis and it is considerably cheaper! So you do you boo and pffft to the others. 
  • Note 6- M and M's: you can use your favorite here! Be they regular milk chocolate m and m's, peanut m and m's, crunchy m and m's, crispy m and m's or other. 
  • Note 7- Chocolate chips: chocolate chips from the baking section of the supermarket or a block of cooking chocolate or chocolate melts chopped into chunks. Either way we always want to use cooking chocolate, not sweet eating chocolate. 

Nutrition

Calories: 401kcal | Carbohydrates: 54g | Protein: 3g | Fat: 20g | Saturated Fat: 12g | Polyunsaturated Fat: 1g | Monounsaturated Fat: 4g | Trans Fat: 1g | Cholesterol: 59mg | Sodium: 123mg | Potassium: 81mg | Fiber: 1g | Sugar: 41g | Vitamin A: 453IU | Vitamin C: 0.1mg | Calcium: 44mg | Iron: 1mg