Marshmallow Brownie

User Reviews

4.9

94 reviews
Excellent
  • Prep Time

    25 mins

  • Cook Time

    30 mins

  • Total Time

    1 hr 5 mins

  • Servings

    10

  • Calories

    370 kcal

  • Course

    Dessert

  • Cuisine

    American

Marshmallow Brownie

Marshmallow Brownie combines a dense, rich chocolate brownie base with a fluffy homemade marshmallow topping and chocolate cream swirls. The recipe integrates melted butter, cocoa, and chocolate chips for a moist texture, balanced by light marshmallow made from egg whites and sugar syrup.

Description

The brownie component blends granulated sugar, eggs, cocoa powder, flour, baking powder, salt, dark chocolate chips, and melted butter to create a fudgy chocolate layer baked in a parchment-lined pan. The marshmallow topping involves whipping egg whites with sugar until soft peaks form, then pouring hot sugar syrup cooked to soft-ball stage into the mixture, resulting in a light, airy meringue-like topping infused with vanilla.

The assembly includes spreading brownie batter in the pan, baking it until firm, then topping it once cooled with the marshmallow mixture. A chocolate swirl is made by melting semisweet chocolate with heavy cream and drizzled atop the marshmallow before setting. This combination produces a contrast between dense brownie and smooth marshmallow, with an added creamy, chocolaty finish.

The recipe is adapted from frederikkewaerens.com, indicating a tested approach combining classic brownie and marshmallow techniques into one layered dessert.

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Ingredients

Servings

INGREDIENTS:

For the Marshmallow:

  • 8 egg room temperature, white
  • 1/2 cup water 120ml
  • 2 2/3 cups sugar 550g, divided
  • 1/4 cup light corn syrup 60mL
  • 2 tsp vanilla extract 10mL

For the Brownie:

  • 2 cups granulated sugar 400g
  • 2 egg
  • 4 tablespoons cocoa powder 30g
  • 1 cup flour 120g
  • 1 teaspoon baking powder 4g
  • 2 teaspoon salt 12g
  • 2 cup dark chocolate chips 350g
  • 1 cup butter 225g, melted

For the Chocolate Swirls

  • 2/3 cup semisweet chocolate 115g
  • 4 tbsp heavy cream 60mL
  • 1/4 tsp cream of tartar optional

Instructions

INSTRUCTIONS:

For the Brownie:

  1. Preheat the oven to 350 degrees F and prep a 9x13-inch baking pan with parchment paper.
  2. In a bowl, combine eggs and sugar. Mix together.
  3. Sift cocoa powder, flour, baking powder and salt into a separate bowl. Mix again.
  4. Combine with egg and sugar mixture.
  5. Toss in chocolate chips and melted butter.
  6. Add batter to pan and smooth.
  7. Bake for about 30 minutes.

For the Marshmallow:

  1. Beat the egg whites and 2/3 cup of sugar until soft peaks form. Add cream of tartar if using.
  2. In a medium saucepan add the remaining sugar, 2/3 cup water and corn syrup, then place on low heat.
  3. Stir until the sugar melts and becomes clear.
  4. Maintain at medium high heat until temperature reads 235-240F.
  5. Drizzle the sugar into the mixer immediately.
  6. Add vanilla and run mixer until marshmallow is cool/tepid. 

For the Assembly:

  1. Melt 1/3 cup semi sweet chocolate and about 2 tablespoons of cream together. Set aside.
  2. Once the brownie has cooled, pile the marshmallow fluff on and smooth it out using a spatula. 
  3. Pipe the chocolate ganache all over the top and use a toothpick or skewer to create a more marbleized pattern of swirls. 

Notes

  • Use room temperature egg whites to achieve better volume in marshmallow topping.
  • Cook sugar syrup to 235-240°F for proper marshmallow consistency.
  • Let brownies cool completely before adding marshmallow topping to prevent melting.
  • Chocolate swirls add decorative and flavor contrast and can be customized in amount.

Nutrition Information

Show Details
Serving 1g Calories 370kcal (19%) Carbohydrates 67g (22%) Protein 7g (14%) Fat 13.7g (21%) Saturated Fat 3g (15%) Polyunsaturated Fat 5.2g (31%) Monounsaturated Fat 4g (20%) Cholesterol 31mg (10%) Sodium 223mg (9%) Potassium 318mg (7%) Fiber 4g (16%) Sugar 47g (94%) Vitamin A 50IU (1%) Calcium 70mg (7%) Iron 2.8mg (16%)

Nutrition Facts

Serving: 10Serving

Amount Per Serving

Calories 370 kcal

% Daily Value*

Serving 1g
Calories 370kcal 19%
Carbohydrates 67g 22%
Protein 7g 14%
Fat 13.7g 21%
Saturated Fat 3g 15%
Polyunsaturated Fat 5.2g 31%
Monounsaturated Fat 4g 20%
Cholesterol 31mg 10%
Sodium 223mg 9%
Potassium 318mg 7%
Fiber 4g 16%
Sugar 47g 94%
Vitamin A 50IU 1%
Calcium 70mg 7%
Iron 2.8mg 16%

* Percent Daily Values are based on a 2,000 calorie diet.

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Overall Rating

4.9

94 reviews
Excellent

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