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5 from 3 votes

Mom's Famous Marshmallow Brownies Recipe

If you are craving a good brownie recipe, these Homemade Marshmallow Brownies need to be on your list. They are simple, delicious, and you will probably be known for making the best brownies.
Prep Time40 mins
Cook Time22 mins
Total Time1 hr 2 mins
Course: Dessert
Cuisine: American
Keyword: Best brownie recipe, famous brownies, marshmallow brownies
Servings: 35
Calories: 211kcal


  • Large Mixing Bowl
  • Electric Hand Mixer
  • Baking Sheet
  • Medium Size Mixing Bowl


  • 1 cup butter softened to room temperature
  • 2 cups sugar
  • 1/3 cup cocoa powder
  • 4 eggs
  • 1 1/2 cups flour
  • 1 teaspoon salt
  • 2 teaspoons vanilla
  • 10 ounces miniature marshmallows


  • 1/2 cup butter softened
  • 2 Tablespoons milk
  • 1 teaspoon vanilla
  • 4 Tablespoons cocoa powder
  • 3 cups powdered sugar


  • Soften margarine and blend in sugar and cocoa. We like to mix the brownie batter by hand for best results.
  • Beat together and add 4 eggs, one at a time, mixing after each one.
  • Add flour, salt and vanilla and mix well.
  • Spread on large half sheet baking pan that has been lightly greased. They are about 18 x 13 x 1 inch.
  • Bake 22-25 minutes at 350.
  • Remove from oven and cover entire top with 1 package of miniature marshmallows.
  • Return to oven for 3 minutes, until marshmallows are soft and puffy.
  • Cool and frost with chocolate frosting.


  • Mix all ingredients with a hand mixer until smooth.
  • Add more powdered sugar or milk until you reach desired consistency and spread on top of bars.



  • We store these brownies on the counter covered or in an airtight container.


Calories: 211kcal | Carbohydrates: 33g | Protein: 2g | Fat: 9g | Saturated Fat: 5g | Trans Fat: 1g | Cholesterol: 40mg | Sodium: 151mg | Potassium: 39mg | Fiber: 1g | Sugar: 26g | Vitamin A: 272IU | Calcium: 9mg | Iron: 1mg