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M&M Cookie Bites

A cookie traybake packed full of M&Ms
Prep Time20 mins
Cook Time15 mins
Course: Dessert, Snack
Keyword: Chocolate, Cookie, Cookies, M&Ms, Traybake
Servings: 16 slices
Author: diningwithali


  • 160 g plain flour
  • 64 g cocoa powder
  • 1 tsp bicarbonate of soda
  • 1/2 tsp salt
  • 1 tbsp cornflour
  • 115 g unsalted butter
  • 50 g granulated sugar
  • 165 g light brown sugar
  • 1 egg
  • 1/4 tsp vanilla extract
  • 2 bags chocolate M&Ms


  • Preheat oven to 190C/170C fan. Line a 13x9 rectangular tin with baking paper.
  • Mix together flour, cocoa powder, bicarbonate of soda, salt and cornflour. Set aside.
  • Melt butter in a large bowl in the microwave. Add the sugars to the butter and whisk for 2 minutes or until smooth.
  • Add the egg and vanilla extract. Whisk until smooth.
  • Combine with the dry ingredients and whisk until smooth.
  • Add the majority of the M&Ms. Mix.
  • Press the mixture into the tin and add the remaining M&Ms to the top.
  • Bake for 12-15 minutes. The top of the bake should look like a cookie and a skewer should come out clean.
  • Cool in the tin for 15 minutes. Transfer to a cooling rack. Cut into 16 pieces (or less if you'd like larger pieces).