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M&M Cookie Bars

M&M Cookie Bars

M&M Cookie Bars are soft and chewy, and are easily made with only four ingredients. If you love M&M's, this is the ultimate treat to make. We guarantee it will satisfy your sweet tooth many times over!
Course Cookie Bars, Dessert
Cuisine American
Keyword M&M Cookie Bars
Prep Time 10 minutes
Cook Time 20 minutes
Total Time 30 minutes
Servings 12 cookie bars
Calories 486kcal
Author Catalina Castravet


  • 1 box vanilla cake mix
  • 2 large eggs
  • 1/2 cup (1 stick) unsalted butter melted
  • 2 cups M&M's


  • Preheat oven to 350 degrees F. Spray a 9x9-inch pan with nonstick spray. Cover bottom with parchment paper in a way that overhands on two sides, for easy cookie bars removal.
  • In a large bowl, stir the first three ingredients together until well combined. Add M&M's and stir until well combined.
  • Spread and pat the cookie dough in the pan. Level the top with a spatula.
  • Bake for about 25-35 minutes or until golden brown. A toothpick inserted in the center should come out clean, or just a few crumbs, but not raw batter.
  • Let the cookie bars cool before cutting, as cooling will allow them to firm a bit.
  • Using the parchment paper handles, lift the cookie from the pan and cut into bars.



The recipe can be made in a 9x13 inch pan, the baking time will change, the bars will be thinner and will be done in about 20 minutes.


Calories: 486kcal | Carbohydrates: 58g | Protein: 4g | Fat: 26g | Saturated Fat: 9g | Cholesterol: 32mg | Sodium: 518mg | Potassium: 45mg | Fiber: 1g | Sugar: 39g | Vitamin A: 820IU | Vitamin C: 0.2mg | Calcium: 145mg | Iron: 1.4mg