M&M Cookie Bars Recipe

4.74 from 71 votes

Everyone will love these thick and chewy M&M Cookie Bars that are packed with colorful candies and come together in only 35 minutes!

Prep Time15

Cook Time20

Total Time35

Course: Brownies & Bars

Cuisine: American

Diet: Vegetarian

Servings:

Calories: 388kcal

Author: Andrea

Ingredients

12 tbsp. 1 1/2 sticks unsalted butter
1 c. brown sugar
1/2 c. granulated sugar
1 large egg
1 large egg yolk
2 1/2 tsp. vanilla extract
2 1/4 c. all-purpose flour
3/4 tsp. coarse kosher sea salt
1/2 tsp. baking soda
1 1/4 c. M&M's divided

Instructions

Preheat oven to 325°F (163°C). Line a 9x13-inch metal baking pan with parchment paper, and set aside.
In a microwave-safe mixing bowl, add the butter. Melt on half power for 1-2 minutes or until almost melted. Whisk to completely melt.
Add sugars, egg, egg yolk, and vanilla extract. Beat the mixture by hand for 30 seconds. Let the batter rest for 30 seconds, then beat again for 30 seconds.
Add the dry ingredients: flour, salt, and baking soda. Using a rubber spatula or a wooden spoon, mix until combined. Fold in 1 cup of M&M's.
Transfer the dough into the prepared baking pan. Using the spatula, spread the cookie dough into an even layer. Sprinkle the remaining 1/4 cup of M&M's on top.
Place in the oven and bake for 20-25 minutes or until the cookie bars are set. Remove from the oven and allow to cool in the pan for 20 minutes before cutting and serving.

Notes

- You can swap out the M&M's for whatever candy or nuts you like.

To STORE your M&M Cookie Bars, keep them in an airtight container at room temperature. They’ll stay fresh for up to a week. To FREEZE, wrap the bars tightly and store them in a freezer-safe bag for up to three months.

When you're ready to enjoy, thaw at room temperature. If you prefer them warm, reheat in the microwave for 10-15 seconds.

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