Preheat: if your air fryer model requires preheating, start with this step.
Cob loaf: use a knife and chopping board to slice the top off the cob loaf leaving a 1 inch border. Then pull the soft bread from the insides taking care to leave a solid bread base.
Spinach mixture: place a large frying pan onto the stove top, turn the heat to high and add the olive oil. Next add the diced onion and bacon then cook for 2 minutes. Then add the frozen spinach and cook until it thaws and stir to consistently combine with the bacon and onion.
Cheese mixture: add the cream cheese, sour cream and cheddar cheese to a large heatproof jug (or bowl). Microwave on high for 2 ½ minutes then carefully remove from the microwave and stir until the mix is consistently melted.
Combine: add the cooked bacon, onion and spinach to a large mixing bowl. Then add the melted cheese mix. Sprinkle in the dried soup mix and use a spatula to stir and combine.
Fill: transfer the combined filling into the hollowed bread bowl and use the spatula to spread it across evenly with a top that doesn't go above the bread border.
Wrap: next wrap the cob loaf in aluminum foil.
Cook: put the foil covered cob loaf into the air fryer and cook at 160 degrees for 10 minutes.
Uncover: once the initial cook time is up, carefully remove the covered cob loaf from the air fryer and remove the foil. Then gently place it back into the air fryer. Next brush the border of the cob with olive oil, add the extra bread bits to the air fryer basket and spray with olive oil. Cook for a further 5 minutes.
To serve: gently remove the cooked cob loaf from the air fryer (support the base) and place it in the middle of a large serving platter. Spread the extra bread bits around the base and serve.