Fudgy brownies layered and swirled with marshmallow creme for the perfect gooey bite every time!

Why You’ll Love This Recipe

• Rich, fudgy texture with melty marshmallow swirls

• Easy to make with simple pantry ingredients

• Perfect balance of chocolate and marshmallow sweetness

• Great for sharing or satisfying your chocolate cravings

Ingredients

• 2 cups white granulated sugar

• 3 large eggs

• 1 egg yolk

• ½ cup unsalted butter, melted

• 2 tsp pure vanilla extract

• ½ cup oil (canola or vegetable)

• ¾ cup all-purpose flour

• 1 cup unsweetened cocoa powder (Dutch process)

• 1½ tbsp cornstarch

• ½ tsp salt

• 1 cup semi-sweet chocolate chips

• 1 cup marshmallow creme

Directions

1: Preheat oven to 350°F (175°C). Line a 9×13-inch baking pan with parchment paper, leaving an overhang for easy removal. Lightly grease the parchment.
2: In a large bowl, whisk sugar, eggs, and egg yolk until pale and fluffy. Add melted butter, vanilla extract, and oil; mix until smooth.
3: In a separate bowl, sift together flour, cocoa powder, cornstarch, and salt.
4: Fold the dry ingredients into the wet mixture just until combined. Stir in chocolate chips.
5: Spread half the batter evenly in the prepared pan. Drop spoonfuls of marshmallow creme over the batter. Top with the remaining batter and gently swirl with a knife to create a marbled effect.
6: Bake 28–32 minutes, until a toothpick inserted into the brownie (avoiding marshmallow areas) comes out with moist crumbs.
7: Let cool completely in the pan before lifting out using the parchment overhang. Cut into 16 squares and serve.

Tips & Variations

• Use regular or mini marshmallows melted into a quick marshmallow sauce if marshmallow creme isn’t available.

• For extra texture, sprinkle chopped nuts over the top before baking.

• Store brownies in an airtight container at room temperature for up to 3 days.

Frequently Asked Questions

Can I substitute oil with melted butter?
Yes, melted butter can be used instead of oil for a richer flavor, but it may slightly change texture.

How do I prevent marshmallow from burning?
Swirling the marshmallow creme gently and baking until a toothpick comes out moist helps avoid overbaking the marshmallow.

Can I freeze these brownies?
Yes, brownies freeze well for up to 3 months. Wrap tightly and thaw at room temperature before serving.

Final Thoughts

These Ultimate Marshmallow Brownies offer a perfect combination of fudgy chocolate and gooey marshmallow in every bite. They’re easy to make and sure to delight any chocolate lover!