Follow this recipe tutorial at home to learn how to make rich and fudgy three-layer s’mores brownies! Homemade chocolate brownies are baked over a graham cracker base, and topped with toasted marshmallow meringue! Step-by-step photo guidance provided. Yields 16 brownies and takes 55 minutes to make.
Preheat the oven to 350°F (180°C). Grease an 8x8–inch (20x20–cm) pan with butter or nonstick cooking spray and then line the pan with parchment paper, leaving an overhang on all sides. Grease the parchment with butter or nonstick cooking spray. Line the graham cracker sheets in an even layer on the bottom of the pan, then set it aside.
In a large bowl, whisk together the flour, sugar, cocoa powder, salt, and baking powder then set aside.
In a medium bowl, whisk together the butter, eggs, and vanilla until well combined. Add the wet ingredients to the dry ingredients and mix until just combined. Pour the brownie batter into the prepared pan and evenly spread it on top of the graham crackers.
Bake for 28-30 minutes, then test the brownies by inserting a toothpick into the center of the pan; if it comes out with wet batter, the brownies are not done. If there are only a few moist crumbs, the brownies are done. Keep checking the brownies every 2 minutes until you have moist crumbs.
Remove the pan from the oven and allow the brownies to cool completely in the pan.
Once cooled, frost with marshmallow meringue frosting. Once topped with the marshmallow meringue, brownies can be left at room temperature for up to 8 hours. Cover and store leftover brownies in an airtight container in the fridge for up to 2 days.
Notes
Note: If you don’t want a super thick layer of frosting (as pictured), halve the marshmallow meringue frosting recipe.