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Fluffernutter Chocolate Chip Cookie Bars

Reese’s, chocolate chips, and marshmallows. What’s not to love?

Can’t decide between Reese’s, chocolate, or marshmallows? With these cookie bars, you don’t have to! That’s right, these little bars are packed full of your favorites. They start with a peanut butter cookie base and then add on chopped Reese’s, chocolate chips, and marshmallow fluff.

These Fluffernutter Chocolate Chip Cookie Bars will hit the spot if you’re craving a sugary treat. See how easy they are to throw together in the video below!

Don’t these look absolutely mouthwatering? Let me tell you, they taste even better! Gooey marshmallow fluff, melted chocolate, and of course, Reese’s! These are the perfect bars to make for your next get-together. Read on to get the full instructions!

Start by preheating the oven to 350 degrees. Then, line a 9×9 with parchment paper and set it aside. In a large bowl, mix butter and peanut butter together until combined. Stir in brown sugar and granulated sugar, followed by the eggs and vanilla extract.

Add in baking soda, salt, cinnamon, corn starch, and all-purpose flour, and mix until combined. Fold in Reeses and chocolate chips. Spread half of the dough evenly over the bottom of the pan. Set aside the rest of the dough.

Spread marshmallow fluff on top of the dough, then press the remaining dough on top (it’s okay if some of the marshmallow fluff is showing).

Bake for about 25 minutes, or until the top is lightly golden brown. Allow bars to cool for at least 30 minutes before cutting into them. You can store the remaining bars in an airtight container (they’re fine at room temperature, if it’s not too hot, for up to 4-5 days).

This is one dessert bar recipe you’re not going to want to miss out on. See the recipe below!

Makes 9-12 bars

25m prep time

25m cook time

4.2
Rated 4.2 out of 5
Rated by 6 reviewers
Ingredients
  • 1/2 cup peanut butter, room temperature
  • 1/2 cup butter, at room temperature
  • 1 cup brown sugar
  • 3/4 cup granulated sugar
  • 2 eggs
  • 2 1/2 tsp vanilla extract
  • 1 tsp baking soda
  • 1 tsp salt
  • 1/2 teaspoon cinnamon
  • 1/2 teaspoon corn starch
  • 2 1/2 cups flour
  • 1 cup Reese’s peanut butter cups, chopped into small pieces
  • 1 cup semi-sweet chocolate chips
  • 1 7 oz jar marshmallow fluff
Preparation
  1. Preheat oven to 350 degrees and line a 9x9 with parchment paper.
  2. In a bowl, mix butter and peanut butter together until combined. Stir in brown sugar and granulated sugar, followed by the eggs and vanilla extract.
  3. Add in baking soda, salt, cinnamon, corn starch, and all-purpose flour, and mix until combined. Fold in Reeses and chocolate chips.
  4. Spread half of the dough evenly over the bottom of the pan. Set aside the rest of the dough.
  5. Spread marshmallow fluff on top of the dough, then press the remaining doup on top (it’s okay if some of the marshmallow fluff is showing).
  6. Bake for about 25 minutes, or until the top is lightly golden brown. Allow bars to cool for at least 30 minutes before cutting into them.
  7. Store remaining bars in an airtight container (they’re fine at room temperature, if it’s not too hot, for up to 4-5 days).

Recipe adapted from A Latte Food.