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Ultimate Gooey S’mores Brownie Bars

gooey s’mores brownie bars - featured image

These Ultimate Gooey S’mores Brownie Bars combine a fudgy brownie base with melted chocolate, crunchy graham crackers, and gooey marshmallows for a nostalgic and indulgent dessert perfect for any occasion.

Ingredients

Scale
  • 1/2 cup (113g) unsalted butter, melted
  • 1 cup (200g) granulated sugar
  • 2 large eggs, room temperature
  • 1 tsp pure vanilla extract
  • 3/4 cup (95g) all-purpose flour, sifted
  • 1/4 cup (25g) unsweetened cocoa powder
  • 1/4 tsp salt
  • 1/4 tsp baking powder
  • 6 whole graham cracker sheets, broken into pieces
  • 1 1/2 cups (about 150g) mini marshmallows
  • 1 cup (175g) milk chocolate chips

Instructions

  1. Preheat your oven to 350°F (175°C). Grease an 8×8-inch baking pan or line it with parchment paper.
  2. In a medium bowl, whisk the melted butter and granulated sugar until combined and glossy, about 1-2 minutes.
  3. Add the eggs one at a time, whisking well after each addition. Stir in the vanilla extract.
  4. In a separate bowl, sift together the flour, cocoa powder, salt, and baking powder.
  5. Gradually fold the dry ingredients into the wet mixture using a rubber spatula. Stop when no dry streaks remain to keep the brownies tender.
  6. Pour the batter evenly into the prepared pan, smoothing the surface with the spatula.
  7. Bake for 20 minutes, or until a toothpick inserted near the center comes out with just a few moist crumbs.
  8. Remove the pan from the oven and immediately sprinkle the chocolate chips evenly over the hot brownies. Let sit for 2 minutes to soften.
  9. Scatter the broken graham cracker pieces evenly on top of the melted chocolate chips.
  10. Top with mini marshmallows, pressing them lightly into the crackers to help them stick.
  11. Return the pan to the oven and bake an additional 5-7 minutes, or until the marshmallows are golden and gooey but not burnt. Watch closely.
  12. Cool completely on a wire rack before slicing into bars.

Notes

To prevent marshmallows from burning, watch the oven closely during the second bake and tent the pan loosely with foil if needed. Use mini marshmallows for better melting. Cut bars only when fully cooled to avoid sticky mess. Room temperature eggs improve batter texture. For extra fudginess, add an extra tablespoon of melted butter or substitute half the granulated sugar with brown sugar.

Nutrition

Keywords: s’mores, brownie bars, gooey dessert, chocolate, marshmallows, graham crackers, easy dessert, homemade brownies