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two squares of smores casserole stacked on top of each other on white plate.
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5 from 21 votes

S'mores Casserole Recipe

S’mores meet cookie bar and this delicious S’mores Casserole comes to life. A campfire inspired chocolate chip cookie dough layered with gooey marshmallow and Hershey’s pieces in the middle. There’s really no words for how good this is.
Prep Time10 minutes
Cook Time20 minutes
Total Time30 minutes
Course: Dessert
Diet: Vegetarian
Servings: 9
Calories: 457kcal
Author: Courtney Paige

Equipment

  • stand mixer or electric hand mixer
  • 8x8 baking pan
  • Rubber Spatula
  • Mixing Bowl
  • Measuring cups and spoons

Ingredients

  • 11 tbsp butter melter
  • ⅓ cup white sugar
  • ½ cup brown sugar
  • 2 tsp vanilla extract
  • 1 egg
  • 1 egg yolk
  • 1 ½ cups all purpose flour
  • 1 tsp baking powder
  • pinch salt
  • ⅔ cup graham cracker crumbs about 9 whole sheets
  • 1 cup mini marshmallows divided
  • ½ cup mini semi-sweet chocolate chips
  • 2 full sized Hershey's milk chocolate bars

Instructions

  • Preheat the oven to 350°F. Melt butter in a glass mixing bowl in 30 second intervals until melted. Add brown sugar and white sugar to the bowl and use an electric mixer to beat until everything is well combined.
  • Add in the egg+yolk and vanilla extract. Beat again.
  • Pour the all purpose flour, baking powder, salt, and ⅓ cup graham cracker crumbs to the batter. Mix again until cookie dough forms.
  • Add in ½ cup of mini marshmallows, chocolate chips, and fold together.
  • Grease an 8x8 square pan with spray oil or line with parchment paper.
  • Layer ½ of the cookie dough into the bottom of the prepared pan. Break 1 Hershey’s bar into pieces and spread pieces in an even layer on the dough. Add the remaining ½ cup mini marshmallows and press them into the dough.
  • Add the remaining cookie dough on top of the chocolate/marshmallow layer. Then press the remaining ⅓ of graham crackers into the top.
  • Bake for 22-25 minutes.
  • Remove from the oven and place the remaining Hershey’s Bar pieces onto the top while it’s still hot (they’ll get a little melty and it is DELISH).
  • Allow the casserole to cool before cutting into squares. Serve with a little vanilla ice cream or whipped cream if desired and enjoy!

Video

Notes

Store this casserole in an airtight container for up to 1 week. Reheat in the microwave or the oven at 300° for 5-10 minutes.
Be sure to grease or line your baking dish! The marshmallow is quite sticky when it bakes and very difficult to get off of an ungreased pan.

Nutrition

Serving: 1square | Calories: 457kcal | Carbohydrates: 60g | Protein: 4g | Fat: 23g | Saturated Fat: 14g | Polyunsaturated Fat: 1g | Monounsaturated Fat: 4g | Cholesterol: 78mg | Sodium: 280mg | Potassium: 57mg | Fiber: 2g | Sugar: 39g