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Peanut Butter S'mores Cookie Bars

Chewy and rich cookie bars with dark chocolate, peanut butter, and toasted marshmallows.

Course Dessert
Prep Time 15 minutes
Cook Time 20 minutes
Total Time 35 minutes
Servings 12 servings
Author Taavi Moore

Ingredients

  • 1 cup unsalted butter, melted
  • 1 cup dark brown sugar, packed
  • ½ cup granulated sugar
  • ¼ cup + 2 tbsp milk
  • ¼ cup + 2 tbsp creamy peanut butter
  • 2 tsp vanilla extract
  • 2 ½ cups all-purpose flour
  • 1 tbsp cornstarch
  • ¾ tsp baking powder
  • ½ tsp baking soda
  • ½ tsp salt
  • ¾ cup chopped dark chocolate, divided
  • 5-6 graham cracker sheets + ¼ cup roughly chopped
  • ⅓ cup mini marshmallows

Instructions

  1. Preheat the oven to 350°F. Line an 8×8 baking pan with parchment paper.

  2. In a large mixing, whisk together melted vegan butter and sugars. Add milk, peanut butter, and vanilla. Mix until combined.

  3. Add flour, corn starch, baking powder and soda, and salt. Use a rubber spatula or wooden spoon to fold dry ingredients into wet until a soft dough forms. Fold in ½ cup chopped chocolate.

  4. Layer bottom of dish with graham crackers, breaking them in half or quartered if needed to fit. Press dough into the prepared baking dish. Bake for 20-22 minutes until edges start to pull away from the sides and are golden brown. Top with marshmallows then broil for 1 minute. Remove from oven and top with remaining ¼ cup chocolate pieces and chopped graham cracker pieces. 

  5. Allow them to cool for 15 minutes before slicing into bars.