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5 from 2 votes


Homemade Marshmallow Brownies are fudgy, chocolaty brownies with a melted marshmallow topping! Perfect from scratch brownie recipe for anyone who loves chocolate & marshmallows!
Prep Time25 mins
Cook Time25 mins
Total Time50 mins
Course: Brownies, Dessert
Cuisine: American
Keyword: Marshmallow Brownies
Servings: 18
Calories: 245kcal


  • 1 cup sugar
  • 1/2 cup butter, softened
  • 2 eggs
  • 1 tsp vanilla
  • 1/3 cup cocoa powder
  • 1/4 tsp salt
  • 3 TBSP milk
  • 1/2 cup all-purpose flour
  • 1/2 cup mini chocolate chips
  • 10 oz bag mini marshmallows

Chocolate Frosting

  • 3 Tbsp butter softened
  • 1/4 cup chocolate chips
  • 2 Tbsp milk
  • 1 cup powdered sugar


  • Preheat oven to 350 degrees. Line an 8x8 pan with parchment paper and set aside.
  • Whisk together sugar and butter.
  • Add eggs, vanilla, cocoa powder, and milk and whisk until smooth.
  • Stir in flour, salt, and mini chocolate chips, stirring until flour is well incorporated.
  • Bake for 30 minutes, until brownies are set. Remove from oven.
  • Once brownies are cooked, remove from oven and spread with marshmallows. Do your best to get them even, but it doesn't have to be perfect- you're going to spread it around a bit afterwards. Return to the oven for about 3 minutes- until marshmallows begin to puff. (You don't want the marshmallows to brown so keep a close eye on them.)
  • Take brownies out of the oven. Cool for about 10-15 minutes. Make the frosting.


  • Combine butter, chocolate chips, and milk in a bowl. Microwave for 45 seconds. Add powdered sugar and whisk until smooth.
  • Pour frosting over warm brownies. Swirl gently with a spatula. You just want to spread the marshmallows around a bit and incorporate a bit of the chocolate frosting into the melted marshmallows. Let cool to set.
  • Chill in the fridge or freezer for 20-30 minutes prior to cutting for a cleaner cut. I also spray my knife with non-stick spray! ENJOY! 


Calories: 245kcal | Carbohydrates: 40g | Protein: 2g | Fat: 10g | Saturated Fat: 6g | Cholesterol: 38mg | Sodium: 121mg | Potassium: 40mg | Fiber: 1g | Sugar: 32g | Vitamin A: 263IU | Calcium: 20mg | Iron: 1mg