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S'mores Brownies

These s'mores brownies are the most indulgent brownie treats, with a graham cracker crust and decadent brownies topped with toasted marshmallows!
Prep Time 10 mins
Cook Time 30 mins
Total Time 40 mins
Course Dessert
Cuisine American


  • ½ cup melted butter 113 grams
  • cup chocolate 50 grams
  • 1 cup sugar 200 grams
  • 1 tablespoon vegetable/canola oil
  • 2 eggs
  • ¾ cup flour
  • ½ cup cocoa powder
  • ¼ teaspoon salt
  • 10-12 Graham crackers plus 2-3 graham crackers crushed
  • ¼ cup chocolate chips
  • 25-30 large marshmallows


  • Preheat oven to 350ºF
  • Prepare a 9-inch by 9-inch baking pan by greasing the pan with oil or butter and laying parchment paper.
  • Melt the butter and chocolate in a bowl.
  • Add in the sugar and mix until the sugar is dissolved, then mix in the vegetable/canola oil.
  • Add in 2 eggs, and mix until the mixture is light and fluffy, about 5-7 minutes with an electric hand mixer.
  • Sift in the dry ingredients - flour, cocoa powder, and salt. Mix just until incorporated.
  • Line the bottom of your baking pan with the graham cracker.
  • Pour the brownie batter on top, and spread evenly to the edges.
  • Bake for 22-28 minutes, until a toothpick poked into brownies, comes out clean.
  • Remove from oven, then sprinkle with graham crackers and chocolate chips.
  • Arrange the large marshmallows in one layer.
  • Return the pan back to the oven for 2-3 minutes, then increase the temperature to broil.
  • Broil the marshmallows until golden brown (watch carefully, so the marshmallows don’t burn; it takes about 2-3 minutes in my oven).
  • Remove and cool the brownies before cutting into them.
  • Cut the brownies into squares. The marshmallows can get messy. Use a sharp knife, run under hot water, wiping after every cut for clean brownie squares.
Keyword layered s'mores brownies, s'mores brownies