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S'mores Brownies Recipe

Gooey Smores Brownies layered with marshmallows, graham crackers, and chocolate chips—simple, nostalgic, and delicious!
Prep Time20 minutes
Cook Time25 minutes
Total Time45 minutes
Servings: 24 brownies
Calories: 92kcal
Author: Lucy Brewer

Ingredients

  • ⅓ cup unsalted butter
  • 6 cups mini marshmallows, divided
  • 1 ½ cups graham cracker crumbs
  • Brownie Mix, and ingredients indicated on package
  • 2 tablespoons chocolate chips

Instructions

  • Preheat the oven to 350. Line a 9x13-inch pan with parchment paper, with an inch hanging over the sides.
  • In a medium saucepan, melt butter and 3 cups marshmallows over medium low heat, stirring constantly.
    1/3 cup unsalted butter, 6 cups mini marshmallows, divided
    A stainless steel saucepan contains cubed butter and mini marshmallows, placed on a marble countertop next to a white and gray striped kitchen towel.
  • Once butter and marshmallows are melted together add graham cracker crumbs and stir to combine.
    1 1/2 cups graham cracker crumbs
    A metal mixing bowl contains a mixture of melted butter and graham cracker crumbs, next to a white kitchen towel with black stripes on a marble surface.
  • Transfer graham cracker crumb mixture to the 9x13-inch pan and, using a rubber spatula, press to cover the bottom of the pan. Set aside.
    A rectangular baking tray lined with parchment paper holds an evenly spread layer of light brown batter.
  • Prepare the brownie mix according to the package directions.
    Brownie Mix, and ingredients indicated on package
    A clear glass bowl filled with chocolate brownie batter sits on a white marble surface next to a striped kitchen towel.
  • Pour brownie batter over the graham cracker crust.
    A rectangular baking pan with a baked cookie crust and chocolate batter spread on top, ready to be layered.
  • Bake 25 minutes, or according to package directions, until a toothpick inserted 2” from the edge comes out clean.
    A rectangular tray of baked brownies with a cracked, glossy top, lined with parchment paper, sits on a marble countertop.
  • When the brownies are done, remove from the oven and turn on the broiler, keep the oven rack in the middle.
  • Top brownies with remaining 3 cups marshamllows. Return to the oven and broil for about 1 minute, until the marshmallows are golden brown.
    6 cups mini marshmallows, divided
    A rectangular baking pan lined with parchment paper contains a layer of toasted mini marshmallows on top of a chocolate base.
  • Remove the brownies from the oven and top with chocolate chips.
    2 tablespoons chocolate chips

Notes

  • If you want to dig in to these while they are still warm (and you will) use a plastic knife, or a knife sprayed with cooking spray (you may need to reapply as you cut).
  • Watch the marshmallows closely under the broiler! They will burn quickly. They should be golden brown in about a minute. I recommend checking every 30 seconds or so until they are done.
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