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Peanut Butter Cup Cookie Bars

Review Recipe
a close up shot of Peanut Butter Cup Cookie Bars on a wooden board
Peanut butter cup cookie bars are the ultimate in decadence with the perfect combination of chocolate and peanut butter.
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Table of Contents
  1. Peanut Butter Cup Cookie Bars Ingredients
  2. How to Make This Peanut Butter Cup Cookie Bars Recipe
  3. How To Serve
  4. Storage
  5. More Recipes You’ll Love
  6. JUMP TO RECIPE

When it comes to these insanely delicious peanut butter cup cookie bars, the name says it all. Soft and chewy cookie bars, studded with rich and creamy chocolate peanut butter cups and chocolate chips, make the perfect decadent treat.

a close up shot of Peanut Butter Cup Cookie Bars stacked on top of each other
Peanut Butter Cup Cookie Bars raw ingredients that are labeled

You’ll need:

  • 1½ cups salted butter softened
  • 1 cup granulated sugar
  • 1 cup packed light brown sugar
  • 3 eggs, room temperature
  • 2 teaspoons vanilla extract
  • 3½ cups all-purpose flour
  • 1½ teaspoons baking soda
  • ¾ teaspoon salt
  • 3 cups semi-sweet chocolate chips 
  • 24 standard Reese’s peanut butter cups

SUBSTITUTIONS AND ADDITIONS

MIX-INS: Add even more peanut butter flavor to this easy recipe by substituting a portion of the chocolate chips for peanut butter chips.

PEANUT BUTTER CUPS: Instead of the regular-sized Reese’s peanut butter cups, you could substitute miniature peanut butter cups

OUR RECIPE DEVELOPER SAYS

This chewy cookie bar recipe yields more dough than a standard chocolate chip cookie recipe, which lends itself nicely to fully covering the pan for the base and then has enough cookie dough to cover the peanut butter cups, too.  

STEP ONE: Preheat the oven to 375°F. Line a 9×13 metal baking pan (with square edges preferred) with parchment paper.

STEP TWO: Add butter, sugar, and brown sugar in a large bowl. Use a stand mixer or hand mixer to beat together until creamy.

STEP THREE: Add the eggs and vanilla extract, then continue beating until light and fluffy (2-3 minutes), scraping down the sides of the bowl occasionally.

STEP FOUR: Combine flour, baking soda, and salt in a separate mixing bowl. Whisk the flour mixture together.

STEP FIVE: Add the dry ingredients to the wet ingredients and beat just enough to incorporate.

STEP SIX: Add the semi-sweet chocolate chips and stir with a large spoon to mix.

semi sweet chocolate chips added to the mixture and fold in a bowl

STEP SEVEN: Add half of the chocolate chip cookie mixture to the prepared pan. Flatten evenly into the pan. 

PRO TIP:

Use a piece of plastic wrap or a spatula sprayed with non-stick cooking spray to press the dough into the pan. It tends to be a bit sticky.

chocolate chip cookie mixture added to the baking pan

STEP EIGHT: Remove the wrappers from the Reese’s peanut butter cups and place them into the pan over the bottom layer of chocolate chip cookie dough. If needed, cut peanut butter cups in half to fill as much of the space as possible.

PRO TIP:

Refrigerate the peanut butter cups for about 10 minutes to make them easier to cut.

Reese's peanut butter cups placed into the bottom of a pan

STEP NINE: Spoon the remaining dough over the peanut butter cups and press to spread it to cover.

dough spooned over the peanut butter cups on a baking dish

STEP TEN: Bake for 25 to 30 minutes or until almost fully set. The top should be evenly golden brown, and the center should not jiggle much. These cookie bars are best just a little undercooked.

PRO TIP:

Oven temperatures vary and may need to be recalibrated periodically to ensure they are accurate. Make sure to check your bars at the lower end of the recommended baking time.

cookie bars baked in a baking dish

STEP ELEVEN: Once the cookies have cooled completely, lift them from the pan and cut them into bars on a cutting board.

How To Serve

Peanut butter lovers will enjoy these delicious bars, along with a glass of milk to wash it down. If you are looking for an even more indulgent dessert, try adding a big scoop of vanilla ice cream on the side.

Our salted caramel chocolate chip cookie bars and magic cookie bars are two more easy cookie bar recipes to satisfy your cravings.

Storage

IN THE FRIDGE: Store chewy peanut butter cookie bars in an airtight container for up to 5 days.

IN THE FREEZER: You can also freeze these peanut butter chocolate chip cookie bars for up to 3 months.

overhead shot of Peanut Butter Cup Cookie Bars stacked on top of each other on a wooden board

These cookie bars are absolutely delicious and come out nice and thick and just slightly gooey. They are loaded with peanut butter cup goodness and are the perfect treat for when sweet cravings strike. 

FREQUENTLY ASKED QUESTIONS

How do I store these peanut butter chocolate chip bars?

This cookie bar recipe can be stored in the fridge for up to five days, so they don’t get too gooey.

Can I mix in other ingredients for these peanut butter cup chocolate chip cookie bars?

Add other types of chocolate chips or nuts to your cookie bars for even more richness.

Can I freeze these peanut butter cup gooey cookie bars?

These peanut butter cup bars will keep well in the freezer for up to three months.

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a close up shot of Peanut Butter Cup Cookie Bars on a wooden board
5 from 27 votes
Peanut butter cup cookie bars are the ultimate in decadence with the perfect combination of chocolate and peanut butter.
Prep Time 20 minutes
Cook Time 30 minutes
Total Time 50 minutes
Servings 16

Ingredients
  

  • cups salted butter, softened
  • 1 cup granulated sugar
  • 1 cup light brown sugar, packed
  • 3 eggs, room temperature
  • 2 teaspoons vanilla extract
  • cups flour
  • teaspoons baking soda
  • ¾ teaspoon salt
  • 3 cups semi-sweet chocolate chips
  • 24 standard Reese’s peanut butter cups

Instructions
 

  • Preheat the oven to 375°F. Line a 9×13 metal baking pan (with square edges preferred) with parchment paper.
  • Add butter, sugar, and brown sugar in a large mixing bowl. Use a standing mixer or hand mixer to beat together until creamy.
  • Add eggs and vanilla extract, then continue beating until light and fluffy (2 to 3 minutes), scraping down the sides of the bowl occasionally.
  • Add flour, baking soda, and salt in a separate mixing bowl. Whisk together.
  • Add dry ingredients to wet ingredients and beat just enough to incorporate.
  • Add semi-sweet chocolate chips and stir with a large spoon to mix.
  • Add half of the chocolate chip cookie mixture to the prepared baking pan. Flatten evenly into the pan.
  • Remove the wrappers from the Reese’s peanut butter cups and place them into the pan over the bottom layer of chocolate chip cookie dough. If needed, cut the peanut butter cups in half to fill as much of the space as possible.
  • Spoon the remaining dough over the peanut butter cups and press to spread it to cover.
  • Bake for 25 to 30 minutes or until almost fully set. The top should be evenly golden brown, and the center should not jiggle much. These cookie bars are best just a little undercooked.
  • Once the cookies have cooled completely, lift them from the pan and cut them into bars.

Notes

  • This chewy cookie bar recipe yields more dough than a standard chocolate chip cookie recipe, which lends itself nicely to fully covering the pan for the base and then has enough cookie dough to cover the peanut butter cups, too. 
  • Use a piece of plastic wrap or a spatula sprayed with non-stick cooking spray to press the dough into the pan. It tends to be a bit sticky.
  • Refrigerate the peanut butter cups for about 10 minutes to make them easier to cut.
  • Oven temperatures vary and may need to be recalibrated periodically to ensure they are accurate. Make sure to check your bars at the lower end of the recommended baking time.

Nutrition

Calories: 692kcal | Carbohydrates: 79g | Protein: 9g | Fat: 39g | Saturated Fat: 21g | Polyunsaturated Fat: 3g | Monounsaturated Fat: 12g | Trans Fat: 1g | Cholesterol: 80mg | Sodium: 459mg | Potassium: 344mg | Fiber: 4g | Sugar: 50g | Vitamin A: 608IU | Vitamin C: 0.1mg | Calcium: 66mg | Iron: 4mg
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  1. Jacy Teele says

    5 stars
    I would probably add more chocolate. I like peanut butter and all but chocolate with peanut butter not peanut butter with chocolate 🤣

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