soft and chewy rainbow cookies

soft and chewy rainbow cookies - M&M cookies

Soft and Chewy Rainbow Cookies

Super soft and chewy Subway style cookies, packed with M&M's and chocolate chips
5 from 2 votes
Print Pin Rate
Course: Dessert
Cuisine: British
Keyword: Cookie, Cookies, M&M Cookies, Rainbow cookies, Soft chewy cookies
Prep Time: 15 minutes
Cook Time: 10 minutes
Chilling Time: 30 minutes
Total Time: 55 minutes
Servings: 24 Cookies
Calories: 138kcal
Author: Eloise


  • 110 g Unsalted butter, melted
  • 150 g Light brown sugar
  • 115 g Granulated sugar
  • 1 Large egg
  • tsp Vanilla extract
  • 180 g Plain flour
  • 0.5 tsp Bicarbonate of soda
  • 0.5 tsp Salt
  • 100 g M&M’s
  • 100 g Chocolate chips


  • Heat the oven to 180C/160C fan
  • In a large mixing bowl, add the melted butter and both sugars. Using a balloon whisk, mix to form a smooth paste
  • Add the egg and vanilla extract and whisk until the mix is thick and smooth
  • Place a sieve over the bowl. Pour in the flour, bicarbonate of soda, and salt. Sift these into the mix, then gently fold them in until just a few streaks of flour remain
  • Fold in your M&M's and chocolate chips. There should be no streaks of flour remaining at this point
  • Cover the bowl with cling film and refrigerate for at least 30 minutes
  • Using a small cookie scoop, scoop up about 1 tbsp of the dough and place on a cookie tray about 4 inches apart. I baked mine in batches of 6
  • Bake in the oven for 8-10 minutes or until the edges are crisp and golden brown
  • The cookies will look puffy when they come out of the oven, but will flatten and crinkle once cool
  • Leave them to cool on the tray for about 20 minutes before transferring them to a cooling rack. Enjoy!


  • These cookies will last around 3-4 days in an airtight container at room temperature
  • Leave them to cool fully before serving otherwise they're likely to fall apart.
  • Use real butter! Butter substitutes generally do not set hard enough for these cookies
  • Chill the dough overnight for a more caramelised flavour.
  • You can freeze the dough balls and cook from frozen. Just make sure no moisture enters the dough whilst in the freezer. They may also need a few extra minutes cooking.


Calories: 138kcal | Carbohydrates: 21g | Protein: 1g | Fat: 6g | Saturated Fat: 4g | Polyunsaturated Fat: 1g | Monounsaturated Fat: 1g | Trans Fat: 1g | Cholesterol: 18mg | Sodium: 80mg | Potassium: 20mg | Fiber: 1g | Sugar: 15g | Vitamin A: 139IU | Vitamin C: 1mg | Calcium: 13mg | Iron: 1mg
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