Go Back
–+ servings
The Best s’mores cookie bars

The Best S’mores Cookie Bars

These soft, gooey s’mores cookie bars are packed with graham cracker flavor, rich milk chocolate, and melty marshmallow crème — all without the mess of a campfire. Perfect for cozy nights, potlucks, or anytime you’re craving that classic summertime taste in bar form.
Print Recipe Pin Recipe
Prep Time 20 minutes
Cook Time 25 minutes
Total Time 45 minutes
Course Dessert
Cuisine American
Servings 12 bars
Calories 320 kcal

Equipment

  • 8×8-inch Baking Pan
  • Mixing Bowl
  • Hand Mixer or Stand Mixer
  • Parchment Paper

Ingredients
  

Cookie Dough

  • 0.5 cup unsalted butter softened
  • 0.25 cup brown sugar packed
  • 0.25 cup granulated sugar
  • 1 egg room temperature
  • 1 tsp vanilla extract
  • 1 cup all-purpose flour
  • 0.5 cup graham cracker crumbs finely crushed
  • 0.5 tsp baking soda
  • 0.25 tsp salt

Filling

  • 2 bars Hershey's milk chocolate broken into pieces
  • 1 cup marshmallow crème (fluff)

Instructions
 

  • Cream softened butter with brown sugar and granulated sugar until light and fluffy. Add the egg and vanilla extract; beat until smooth.
  • Stir in flour, crushed graham crackers, baking soda, and salt until dough just comes together. Don’t overmix.
  • Divide dough into two equal parts. Press one half into a parchment-lined 8×8 pan. Lift it out and place in freezer to chill.
  • Line the baking pan with fresh parchment and press the second half of dough into the bottom to form the base layer.
  • Layer Hershey’s bars evenly across the dough. Spread marshmallow fluff over the chocolate — it’s okay if it’s a little messy.
  • Carefully place the chilled top dough layer over the marshmallow. Press edges gently to seal without flattening the filling.
  • Bake at 350°F for 25 minutes, or until golden brown. Let cool completely in the pan before slicing.

Notes

To make them extra chocolatey, sprinkle chocolate chips on top before baking or drizzle with melted chocolate after cooling. These bars travel well and taste amazing slightly warm or chilled from the fridge.

Nutrition

Calories: 320kcalCarbohydrates: 42gProtein: 3gFat: 16gSaturated Fat: 9gCholesterol: 35mgSodium: 120mgPotassium: 100mgFiber: 1gSugar: 28gVitamin A: 300IUCalcium: 40mgIron: 1.5mg
Keyword Campfire Dessert, Chocolate, Cookie Bars, Gooey, S'mores
Tried this recipe?Let us know how it was!