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 mins
Cook Time11 minutes mins
Chill Time30 minutes mins
Course: Dessert
Keyword: christmas, cookies
Servings: 20 cookies
Author: Emily - My Messy Kitchen
- 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
- ⅓ cup mini m&ms extra for garnish
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.