Marshmallow Brownies
Fudgy chocolate brownies with a layer of melted marshmallows on top — like Rocky Road in bar form. The marshmallows toast slightly under the broiler, creating that perfect golden-and-gooey texture. Comfort dessert with kid-appeal but grown-ups disappear them faster.
Prep Time
20 min
Cook Time
24 min
Servings
6
Calories
497 cal
🛠 Interactive Recipe Tools — Use them right here on this page
Smart Servings Scaler
- Chocolate150 g
- Marshmallow1 ½
- Butter½ cup
- Flour3 cups
- Sugar¾ cup
- Eggs3
- Vanilla Extract1 ½ tsp
All quantities scaled automatically from 6 servings.
Ingredients
Makes 6 servings · Use the Servings Scaler above to adjust
- Chocolate150 g
- Marshmallow1.5
- Butter0.5 cup
- Flour3 cups
- Sugar0.75 cup
- Eggs3
- Vanilla Extract1.5 tsp
Instructions
- 1
Heat the oven to 350°F (175°C). Line an 8×8 pan with parchment paper, leaving overhang on two sides.
- 2
Melt 6 oz of bittersweet chocolate with ½ cup of butter in a double boiler or microwave. Cool 5 minutes.
- 3
Whisk in 1 cup of sugar, then 3 eggs (one at a time), then 1 teaspoon of vanilla. Fold in ½ cup of flour, ¼ cup of cocoa powder, ½ teaspoon salt.
- 4
Pour batter into the prepared pan. Bake 22-25 minutes — toothpick should come out with moist crumbs. Don't fully bake; they'll continue cooking with the topping.
- 5
Remove from oven. Immediately scatter 2 cups of mini marshmallows over the top, plus ½ cup of chocolate chips and ½ cup of chopped pecans or walnuts (optional).
- 6
Return to the oven, or set the broiler to high. Bake/broil 2-3 minutes until marshmallows are puffed and golden brown on top. Watch carefully — they burn fast. Cool completely before slicing — wet marshmallows will tear if cut warm.
Watch how to make Marshmallow Brownies
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💡 Expert Tips
- 1.Slightly underbake the brownie base. They finish with the marshmallow topping. Fully baked = dry brownies under wet marshmallows.
- 2.Watch the broiler. Marshmallows go from golden to burnt in 30 seconds. Stand at the oven, don't walk away.
- 3.Cool COMPLETELY before slicing. Warm marshmallow stretches and tears. A clean cut requires fully cooled bars.
- 4.Sharp knife sprayed with cooking spray. Marshmallows stick to a clean knife. A light spray gives clean cuts.
🔬 Why It Works
Marshmallow brownies are two desserts in one: a fudgy chocolate brownie base topped with toasted marshmallow. The brownie base is slightly underbaked because the marshmallow topping adds another 2-3 minutes of cooking that would over-bake fully-baked brownies. Broiling the marshmallows creates the golden-brown crust that contrasts the soft gooey marshmallow interior. The chocolate chips melt into the marshmallow for extra chocolate pockets.
Frequently Asked Questions
Can I use full-size marshmallows?▾
Why are mine soggy under the marshmallows?▾
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How long do they keep?▾
4.5
625 home cooks rated this
Nutrition Facts
Per serving (recipe makes 6 servings)
* Percent Daily Values based on a 2,000 calorie diet. Values are estimates.
Nutrition Facts
Per serving (recipe makes 6 servings)
* Percent Daily Values based on a 2,000 calorie diet. Values are estimates.
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