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Brown Butter M&M Cookies

These Brown Butter M&M Cookies are soft, chewy, and loaded with colorful M&M’s, all elevated with rich, nutty brown butter for an irresistible toffee-like flavor. They bake up with golden edges, gooey centers, and plenty of chocolate in every bite. A quick chill and a simple brown butter upgrade take this classic cookie to the next level.
Prep Time15 minutes
Cook Time11 minutes
Chill Time30 minutes
Course: Dessert
Keyword: christmas, cookies
Servings: 20 cookies
Author: Emily - My Messy Kitchen

Ingredients

  • 1 cup salted butter browned
  • ¼ cup salted butter room temperature
  • 1 cup light brown sugar
  • ¾ cup granulated sugar
  • 2 tsp vanilla extract
  • 2 eggs room temperature
  • 3 cups all-purpose flour
  • 1 tsp baking soda
  • 2 tsp corn starch
  • ½ tsp kosher salt
  • ¾ cup regular m&ms extra for garnish
  • cup mini m&ms extra for garnish

Instructions

  • First brown the butter. Add 1 cup salted butter to a saucepan and melt over medium heat. Continue cooking after it melts; the butter will foam, sizzle, and eventually turn golden brown with toasted brown specks on the bottom. Once it smells nutty and caramel-like, remove it from the heat and immediately stir in the ¼ cup cold salted butter until fully melted. Allow to cool for 10–15 minutes until warm, not hot.
  • In a stand mixer or large bowl, combine the slightly cooled brown butter mixture, brown sugar, granulated sugar, and vanilla. Mix on low until smooth.
  • Add the eggs one at a time while mixing on low. Add the flour, cornstarch, baking soda, and salt. Mix on low just until the dough forms and flour is incorporated. Use a rubber spatula to fold in the regular and mini M&M’s. Line a cookie sheet with parchment paper and scoop 20 dough balls (I use a large 3 tbsp cookie dough scoop) Cover and chill for 30–45 minutes.
  • Preheat the oven to 350°F. Place 4 dough balls on a parchment-lined baking sheet, spacing them about 2 inches apart. Bake for 11–12 minutes, or until the edges are set and the centers look slightly underbaked.
  • These cookies will spread, so as soon as they come out of the oven, you can use a round cookie cutter to gently scoot them into a perfect circle to reshape. This step is totally optional, but I always do it, and I also like to gently press a few extra regular and mini M&M’s into the tops while they’re still warm. Let the cookies cool on the baking sheet for 5 minutes, then transfer to a cooling rack.