These gooey Marshmallow Brownies are rich, fudgy, and topped with melty toasted marshmallows for the ultimate chocolate treat.

Scale

1 cup unsalted butter

1 1/2 cups granulated sugar

1/2 cup brown sugar

4 large eggs

1 tablespoon vanilla extract

1 cup all-purpose flour

1 cup cocoa powder

1 teaspoon espresso powder

1/2 teaspoon salt

1 cup chocolate chips

3 cups mini marshmallows

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1. Preheat the oven to 350°F and line a 9×13 pan with parchment paper.

2. Melt the butter and sugars until smooth.

3. Whisk in the eggs and vanilla.

4. Add flour, cocoa, salt, and espresso powder.

5. Fold in chocolate chips.

6. Bake 25–28 minutes.

7. Top with marshmallows and bake 5–7 more minutes.

Let brownies cool slightly before slicing.

Add nuts or swirl peanut butter for variations.