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Chocolate Marshmallow Bars

Ooey, gooey, chocolate goodness! The combination of sweet chocolate, gooey marshmallows and crispy rice will make a family pleasing dessert!

Prep Time 20 minutes
Cook Time 25 minutes
Servings 24 bars


For the bars

  • 1/4 cup unsalted butter softened
  • 1 1/2 cups granulated sugar
  • 3 large eggs
  • 1 teaspoon vanilla extract
  • 1 1/3 cups all purpose flour
  • 3 Tablespoons unsweetened cocoa
  • 1/2 teaspoon baking powder
  • 1/2 teaspoon salt
  • 1 7 ounce tub marshmallow fluff

For the topping

  • 1 1/3 cups semi sweet chocolate chips
  • 1 1/2 cups minature marshmallows
  • 3 Tablespoons unsalted butter
  • 2 cups rice crispy cereal


  1. Preheat oven to 350 degrees. Prepare a 15x10x1 baking sheet by lining it with foil and spraying the foil with non-stick spray.

  2. In a small bowl, mix the butter and sugar together until it’s just combined. Add in the eggs, mixing between each addition. Then, add in the vanilla and mix until combined.

  3. In another bowl,whisk together the flour, cocoa powder and salt. Slowly add it to the wet ingredients and mix until well combined. Spread the batter into the prepared pan and bake for 15-18 minutes.

  4. Once the cake is done cooking, immediately spread the marshmallow fluff all over the top. The heat will help the fluff spread. Cool for about 30 minutes.

  5. Once cooled, prepare the topping by adding the chocolate chips,marshmallows and butter to a saucepan and melting it over medium heat. Once melted, stir in the rice crispies until completely coated.

  6. Spoon or scoop the topping onto the fluff layer and carefully spread it all over the top. Move kind of quickly as the topping will harden up if not spread quickly.

  7. Chill in the fridge until the top is set. Cut into bars and serve! Store in an airtight container at room temperature.