These peanut butter cookie bars are a crowd-pleasing treat for parties, potlucks, school snacks, or an indulgent weeknight dessert. My Oreo Peanut Butter Cookie Bars combine creamy peanut butter, mini Oreo cookies and chocolate chips for a rich, chewy bar that’s easy to make and impossible to resist.
If you enjoy cookie bar recipes, try my Malted Chocolate Chip Cookie Bars for another delicious option.
Peanut Butter Cookie Bars
These peanut butter cookie bars are loaded with mini Oreos and chocolate chips for a playful twist on classic cookie bars. They travel well for gatherings, make a thoughtful packaged gift for friends, and are an instant favorite after school. Serve warm or cooled with a tall glass of milk.
Why You’ll Love This Recipe
- Delicious flavor pairing. Peanut butter, chocolate chips and Oreo cookies create a winning combination of textures and flavors.
- Simple to prepare. With straightforward steps and common pantry ingredients, these bars come together quickly.
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What You’ll Need
Ingredients listed here are the basics for these cookie bars. See the recipe card below for exact amounts and full instructions.
- Butter – Salted or unsalted, softened to room temperature.
- Granulated sugar – For sweetness and structure.
- Light brown sugar – Adds moisture and depth of flavor.
- Creamy peanut butter – Use your preferred brand for best texture.
- Large egg – Helps bind the dough.
- Pure vanilla extract – Enhances overall flavor.
- All-purpose flour – The main dry ingredient for the bars.
- Baking soda – A small amount for lift.
- Kosher salt – Balances sweetness; table salt can be used, reduce amount if needed.
- Chocolate chips – Milk or semi-sweet work well; white or butterscotch chips can be substituted.
- Mini Oreos – Found in most grocery stores; you can crush regular Oreos if needed.
How To Make Peanut Butter Cookie Bars
Preheat and prepare. Heat the oven to 350°F (175°C). Line an 8×8-inch baking dish with foil or parchment and spray with cooking spray.
Cream butter and sugars. In a large bowl, cream the softened butter with the granulated and brown sugars until light and combined.
Add peanut butter. Mix in the peanut butter until fully incorporated.
Egg and vanilla. Stir in the egg and vanilla extract until smooth.
Combine dry ingredients. Add the flour, baking soda and salt. Mix until a soft dough forms.
Fold in mix-ins. Gently stir in the chocolate chips and mini Oreos until evenly distributed.
Press into pan. Transfer the dough to the prepared baking dish and press it into an even layer.
Bake. Bake for 30–35 minutes or until the top is golden and the center is set. Ovens vary, so check for doneness a few minutes early if yours runs hot.
Cool completely. Remove from oven and allow the bars to cool in the pan for about 45 minutes before lifting out the foil and cutting into squares. Serve with milk and enjoy.
How To Serve
These bars are versatile — serve them at parties, pack them for lunches, or enjoy as an after-dinner treat. They can be served warm for a gooey texture or cooled for easier slicing.
How To Store Leftovers
Store leftover bars in an airtight container at room temperature for up to 3 days. For longer storage, keep them refrigerated for up to a week or freeze for up to 2 months; thaw in the fridge or at room temperature before serving.
Oreo Chocolate Chip Peanut Butter Bars
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Equipment
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Oven
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8 x 8 inch baking dish
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Mixing bowl or stand mixer
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Measuring cups
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Measuring spoons
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Mixing spoon
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Knife to cut bars into squares
Ingredients
- 1 stick/8 tablespoons unsalted butter softened
- 1/2 cup granulated sugar
- 1/2 cup packed light brown sugar
- 1/2 cup creamy peanut butter
- 1 large egg
- 1/2 teaspoon pure vanilla extract
- 1 cup all purpose Gold Medal Flour
- 1/2 teaspoon baking soda
- 1/2 teaspoon kosher salt
- 1 cup chocolate chips
- 2 cups mini Oreos
Instructions
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Preheat oven to 350 degrees and line an 8×8 inch baking dish with foil that’s sprayed with cooking spray.
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Place butter and sugars into a large bowl, cream until well combined. Add peanut butter mixing to combine. Add egg and vanilla mixing well. Add flour, baking soda and salt, mixing until dough forms. Add chips and mini Oreo cookies stirring until just combined. Transfer dough to prepared baking dish, press dough evenly into pan.
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Bake for 30-35 minutes or until golden brown and cooked through. Remove and let cool for 45 minutes before cutting into squares. Serve with milk and enjoy!
Nutrition
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