One Bowl S'mores Brownies
Prep time
Cook time
Total time
Fudgey brownies made in one bowl, topped with graham cracker streusel and gooey marshmallows.
Serves: 15-20
For the Streusel:
  • ¾ cup graham cracker crumbs
  • ¾ cup packed brown sugar
  • ½ teaspoon kosher salt
  • ½ teaspoon ground cinnamon
  • 6 tablespoons cold butter, cubed
For the Brownies:
  • 1 ½ cups butter, melted
  • 3 cups granulated sugar
  • 2 teaspoons vanilla extract
  • 4 eggs, room temperature
  • 2¼ cups all-purpose flour
  • 1 cup cocoa powder
  • ½ teaspoon kosher salt
  • 1 cup chopped chocolate or chocolate chips
  • 15-20 halved marshmallows (for topping)
  1. First, make the streusel. Combine your graham cracker crumbs, brown sugar, salt and cinnamon in a bowl. Add in the cubed butter, then use your hands to cut it into the graham cracker mixture until pea-sized crumbs form. Place in the refrigerator until ready to use.
  2. Preheat your oven to 375 degrees F. In the bowl of your mixer, beat together the butter and sugar until well combined, about 3 minutes. Add in the vanilla, then one egg at a time, incorporating each egg before adding in the next one.
  3. Slowly add in your flour, cocoa powder and salt, scraping down the sides of the bowl as needed. Stir in your chopped chocolate or chocolate chips.
  4. Line a 9x13-inch baking dish with parchment, or grease very liberally. Spread your brownie batter into the prepared dish, then sprinkle with the streusel. Pat the streusel down a bit so it sticks to the brownie batter, then press your halved marshmallows into the batter (alternatively, you could swirl marshmallow creme or fluff into these brownies). Bake for 40-50 minutes, or until mostly set. The brownies will still jiggle a little when they’re done, but a toothpick should come out mostly clean. Allow to cool completely before slicing - these are ooey, gooey, fudgey brownies, so they’ll need to be set and cooled or else you’ll have a delicious mess on your hands when you go to cut them!
Recipe by The Crepes of Wrath at