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5.0 from 15 votes

Chewy Brown Butter M&M Blondies

Thick and chewy Brown Butter M&M Blondies. Everyone loves these!

Prep Time
10 mins
Cook Time
10 mins
Additional Time
1 hr
Total Time
1 hr 40 mins
Servings: 1 - 9x13 Pan
Course: Dessert
Cuisine: American

Ingredients

  • 1 cup (227 grams) unsalted butter, melted until browned
  • 1 and 1/2 cups (319 grams) light brown sugar, firmly packed
  • 1/4 cup (50 grams) granulated sugar
  • 1 Tablespoon vanilla extract
  • 2 large egg plus 2 egg yolks, at room temperature
  • 2 cups (245 grams) all-purpose flour
  • 1/4 teaspoon salt
  • 1 and 1/4 cups (210 grams) M&M candies
  • 1/2 cup (85 grams) semi-sweet chocolate chips
  • Flaky sea salt, for sprinkling, optional

Instructions

    Cup of Yum
  1. Preheat oven to 350 degrees (F). Line an 9x13-inch baking pan with parchment paper. Set aside. 
  2. In a saucepan over medium heat, melt butter. Continue cooking, swirling the pan occasionally, until browned. 
  3. Remove from heat and cool for a few minutes, then scrape the butter into a large heat proof mixing bowl.
  4. Whisk in both sugars and mix until well combined. Stir in the vanilla. Then add in the eggs and egg yolks, beating until combined. 
  5. Using a rubber spatula, fold in the flour and salt, mixing until just combined. Finally, fold in the M&Ms and chocolate chips. Scrape the batter into the prepared pan. 
  6. Bake for 26 to 30 minutes, or until the edges are firm and golden and the center is just slightly wobbly.
  7. Cool in pan for at least 1 hour before cutting. Sprinkle with flaky sea salt before serving, if desired. 
  8.  

Notes

  • Recipe & Photos updated 2/1/2021.