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How To Make Brown Butter Blondies With M&M’s

Brown Butter M&M Blondies

Brown Butter Blondies - a dessert bar that melts in your mouth!  Add in M&M's and you have an elevated experience that brings together both a sophisticated dessert and a childhood treat.  What more could you ask for in this delicious dessert bar recipe?
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Course: Dessert
Cuisine: American
Prep Time: 10 minutes
Cook Time: 35 minutes
Total Time: 45 minutes
Servings: 10
Calories: 176kcal
Author: Mariam E.


  • 8 Tbsp unsalted butter
  • 3/4 cup light brown sugar packed
  • 1 large egg
  • 1 cup flour
  • 1/2 tsp baking powder
  • 1/4 tsp salt
  • 2/3 cup M&Ms


  • Preheat oven to 350 degrees. Line an 8x8-inch baking dish with parchment paper and spray with nonstick cooking spray.
  • In a medium saucepan, melt butter. Continue to cook over medium heat for 10 minutes until brown and fragrant. Remove from heat.
  • Whisk in sugar to combine. Add egg and whisk to combine. Stir in flour, baking powder and salt. Fold in M&Ms.
  • Add batter to baking dish and bake for 20-25 minutes, until the edges are golden brown.
  • Cool for 20 minutes before removing from pan and cutting.


  • Make sure to use a preheated oven.
  • Take your butter out of the refrigerator about 20-30 minutes before starting, if it's too cold it will splatter and burn too quickly.
  • Ideally use a light-colored pan, that way you can see when the butter has browned.
  • Watch your butter as you brown it and stir it. Butter can turn from browned to burnt quickly.
  • When working with dry ingredients like flour, I like to sift them together to avoid lumps. 
  • Cool for 20 minutes before removing from pan and cutting.


Serving: 10g | Calories: 176kcal | Carbohydrates: 20.5g | Protein: 2g | Fat: 9.9g | Saturated Fat: 6g | Cholesterol: 43mg | Sodium: 134mg | Fiber: 0.4g | Sugar: 10.7g
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