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Easy No-Bake S’mores Brownie Bars Recipe Perfect for Labor Day Treats

Easy No-Bake S’mores Brownie Bars - featured image

A quick and easy no-bake dessert that mimics classic campfire s’mores with layers of graham cracker crust, melted chocolate, and marshmallow fluff. Perfect for Labor Day and last-minute gatherings.

Ingredients

Scale
  • 1 1/2 cups graham crackers, crushed into fine crumbs
  • 6 tablespoons unsalted butter, melted
  • 1/4 cup powdered sugar
  • 1 cup semi-sweet or milk chocolate chips
  • 2 tablespoons butter (for melting with chocolate chips)
  • 1 cup marshmallow fluff
  • 1/2 teaspoon vanilla extract
  • Pinch of salt

Instructions

  1. Crush 1 1/2 cups (about 150g) of graham crackers into fine crumbs using a rolling pin or food processor.
  2. Melt 6 tablespoons (85g) of unsalted butter in a microwave-safe bowl until fully liquid, about 30 seconds. Stir and cool slightly.
  3. Combine graham cracker crumbs, melted butter, and 1/4 cup (30g) powdered sugar in a bowl. Stir until mixture resembles wet sand.
  4. Press the crust mixture firmly and evenly into the bottom of an 8×8-inch pan lined with parchment paper. Chill in the refrigerator for 10 minutes to set.
  5. In a clean microwave-safe bowl, combine 1 cup (175g) chocolate chips with 2 tablespoons (30g) butter. Microwave in 20-second intervals, stirring between each, until smooth and glossy.
  6. Add 1/2 teaspoon vanilla extract and a pinch of salt to the melted chocolate mixture and stir to combine.
  7. Pour the melted chocolate evenly over the chilled crust and spread smoothly with a spatula. Return to the fridge for 10 minutes to firm up slightly.
  8. Spread 1 cup (240g) marshmallow fluff evenly over the chocolate layer. Optionally, toast with a kitchen torch or under a broiler for a few seconds.
  9. Refrigerate the entire pan for at least 1 hour to let all layers set properly.
  10. Lift bars out using parchment paper edges and cut into squares with a sharp knife, wiping clean between cuts.

Notes

If marshmallow fluff is too sticky to spread, microwave for 10 seconds to soften. Do not skip chilling steps to ensure bars hold their shape. For vegan or gluten-free versions, substitute dairy-free butter, vegan chocolate chips, plant-based marshmallow fluff, and gluten-free crackers as needed. Optional to toast marshmallow topping with a kitchen torch or broiler briefly.

Nutrition

Keywords: no-bake, s’mores, brownie bars, easy dessert, Labor Day treats, chocolate, marshmallow, graham crackers