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Lil' Luna
This M&M COOKIE CAKE has a sugar cookie dough filled with M&M's and some chocolate buttercream frosting on top and is the perfect dessert to enjoy with friends and family.
5 from 6 votes
Prep Time 5 mins
Cook Time 23 mins
Total Time 28 mins
Course Dessert
Cuisine American
Servings 8
Calories 556 kcal



  • 1/2 cup salted butter
  • 3/4 cup granulated sugar
  • 1 large egg
  • 1 egg yolk
  • 1 1/2 cup all-purpose flour
  • 1 tbsp cornstarch
  • 1 tsp baking powder
  • 1/2 tsp baking soda
  • 1/4 tsp salt
  • 3/4 cup m&m's
  • 1/4 cup mini m&m's


  • 4 tbsp butter
  • 3 1/2 tbsp cocoa powder
  • 1 1/2 cups powdered sugar
  • 1/2 tsp vanilla
  • 1-2 tbsp milk
  • M&M's
  • sprinkles



  • Preheat oven to 350 degrees F and grease a 9 inch pie dish.
  • Beat butter for 2 minutes until smooth. Mix in sugar until fluffy. Add in the egg, yolk, and vanilla until smooth, creamy, and light in color.
  • Add the flour, cornstarch, baking powder, baking soda, and salt and mix until combined.
  • Mix in the m&m's by hand (they're break if you use the mixer) until evenly distributed.
  • Spread dough in the greased pie dish. Bake for 23-26 minutes. Cool completely before removing from pie dish and frosting.


  • Beat butter and cocoa powder together. Mix in the powdered sugar and vanilla. Add the milk as needed to get desired consistency.
  • Place frosting in a piping bag with an M1 tip and decorate the cookie cake. Immediately add the M&M's and sprinkles.


Calories: 556kcalCarbohydrates: 79gProtein: 5gFat: 25gSaturated Fat: 15gCholesterol: 97mgSodium: 334mgPotassium: 132mgFiber: 2gSugar: 57gVitamin A: 655IUVitamin C: 0.1mgCalcium: 77mgIron: 2mg
Keyword M&M Cookie Cake
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