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Best S’mores Cookie Bars | Easy Recipe for Sweet Cravings

S’mores Cookie Bars combine all the flavors of the classic campfire treat—gooey marshmallows, melty chocolate, and crunchy graham crackers—into an easy-to-make dessert bar. Perfect for parties, potlucks, or cozy nights in, these bars are irresistibly rich, chewy, and packed with nostalgic flavor.
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Prep Time 15 minutes
Total Time 45 minutes
Servings: 16 bars
Course: Dessert
Cuisine: American
Ingredients Method Notes

Ingredients
  

  • 1 ½ cups graham cracker crumbs
  • 1 cup unsalted butter softened
  • ½ cup granulated sugar
  • ¾ cup brown sugar packed
  • 2 large eggs
  • 2 teaspoons vanilla extract
  • 2 ½ cups all-purpose flour
  • 1 teaspoon baking soda
  • 1 ½ cups semi-sweet chocolate chips
  • 2 cups mini marshmallows
  • 3 large milk chocolate bars broken into pieces

Method
 

  1. Preheat the Oven: Preheat your oven to 350°F (175°C). Line a 9x13-inch baking pan with parchment paper or grease it lightly.
  2. Make the Graham Cracker Crust: In a medium bowl, mix the graham cracker crumbs with ½ cup melted butter until combined. Press the mixture evenly into the bottom of the prepared pan to create a firm crust.
  3. Prepare the Cookie Dough: In a large bowl, cream together the softened butter, granulated sugar, and brown sugar until smooth. Add the eggs one at a time, followed by the vanilla extract, and mix until well combined. Gradually stir in the flour and baking soda to form a cookie dough.
  4. Assemble the Layers: Spread half of the cookie dough evenly over the graham cracker crust. Sprinkle a layer of semi-sweet chocolate chips and mini marshmallows over the dough. Lay the broken pieces of milk chocolate bars evenly on top.
  5. Add the Top Layer: Carefully spread the remaining cookie dough over the marshmallow and chocolate layers. Don’t worry if some marshmallows peek through—it adds to the gooey texture.
  6. Bake: Bake for 25-30 minutes, or until the top is golden brown and the marshmallows are melted.
  7. Cool and Serve: Let the bars cool in the pan for at least 20 minutes before slicing into squares. Enjoy them warm or at room temperature!

Notes

  • Storage: Store leftover bars in an airtight container at room temperature for up to 3 days or in the freezer for up to 2 months.
  • Customization: Add peanut butter, caramel drizzle, or even white chocolate chips for a fun twist.
  • Reheating Tip: Warm the bars in the microwave for 10-15 seconds to get that fresh-from-the-oven gooey texture.
  • Serving Idea: Serve with a scoop of vanilla ice cream for an extra-indulgent treat.

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