These Peanut Butter Cup Cookie Bars are a delightful treat that combines the rich, creamy flavor of peanut butter with the sweetness of chocolate. If you’re a fan of the timeless combination of peanut butter and chocolate, then these bars are sure to become a favorite in your household. They are easy to make, perfect for sharing, and oh-so-delicious!
The best part about these cookie bars is their chewy texture combined with pockets of melted chocolate and peanut butter cups. They’re the perfect dessert for any occasion, whether you’re hosting a gathering or simply satisfying a sweet craving. So, let’s dive into this easy recipe that will leave your taste buds dancing!
What Sets This Recipe Apart

These Peanut Butter Cup Cookie Bars stand out because they pack a double punch of peanut butter flavor with both creamy peanut butter and mini peanut butter cups. Unlike traditional cookies, these bars are baked in a single pan, making them easier to prepare and serve. They also have a delightful balance between chewy and fudgy, creating a texture that’s simply irresistible.
What You’ll Need
To whip up these delicious bars, gather the following ingredients:
- 1 cup all-purpose flour
- 1 teaspoon baking powder
- 1 teaspoon baking soda
- ½ teaspoon salt
- ½ cup unsalted butter, melted
- 1 cup packed light brown sugar
- 1 large egg
- 2 teaspoons pure vanilla extract
- 1 cup mini peanut butter cups
- ½ cup semisweet chocolate chips
- 3 tablespoons creamy peanut butter
Make sure to use quality ingredients for the best flavor. Freshly baked bars will have a nice balance of sweetness and saltiness, complemented beautifully by the chocolate.
What You’ll Need (Gear)
Before you start baking, it’s important to have the right equipment on hand:
- 9×9-inch baking pan – This is perfect for creating thick cookie bars.
- Mixing bowls – You’ll need a large bowl for wet ingredients and a medium bowl for dry ingredients.
- Whisk – For mixing the dry ingredients together.
- Spatula – To fold in the chocolate chips and peanut butter cups smoothly.
- Parchment paper – Optional, but recommended for easy removal of the cookie bars from the pan.
Having these tools ready will help streamline your baking process.
Make Peanut Butter Cup Cookie Bars: A Simple Method

Creating these Peanut Butter Cup Cookie Bars is a breeze. Just follow these simple steps:
Step 1: Preheat the Oven
Preheat your oven to 350°F (175°C). Grease your 9×9-inch baking pan or line it with parchment paper for easier removal later.
Step 2: Combine Dry Ingredients
In a medium bowl, whisk together the flour, baking powder, baking soda, and salt until well combined. Set aside.
Step 3: Mix Wet Ingredients
In a large mixing bowl, combine the melted butter and brown sugar. Stir until the mixture is smooth. Then add the egg and vanilla extract, mixing until fully incorporated.
Step 4: Combine Wet and Dry Ingredients
Gradually add the dry ingredient mixture to the wet ingredients, stirring until just combined. Be careful not to overmix!
Step 5: Fold in the Goodies
Gently fold in the mini peanut butter cups and semisweet chocolate chips using a spatula. This is where the magic happens!
Step 6: Spread and Bake
Pour the batter into the prepared baking pan, spreading it evenly. Drizzle the creamy peanut butter over the top and use a knife to swirl it through the batter. Bake for 20-25 minutes, or until the edges are golden and a toothpick inserted into the center comes out mostly clean.
Step 7: Cool and Serve
Allow the bars to cool in the pan for about 10 minutes before transferring them to a wire rack to cool completely. Cut into squares and serve with a glass of milk or your favorite beverage!
If You’re Out Of…
No worries if you find yourself lacking some ingredients! Here are some simple substitutions:
- All-purpose flour – You can use a gluten-free blend if you prefer.
- Brown sugar – White sugar can be used, but the flavor will differ slightly.
- Unsalted butter – Coconut oil or margarine can be used as alternatives.
- Mini peanut butter cups – You can chop up regular peanut butter cups or use chocolate chips instead.
These adjustments can help you create a batch of Peanut Butter Cup Cookie Bars even if you’re missing a few items!
Testing Timeline
Baking is a science, and timing is crucial. Here’s a guide to ensure your bars turn out perfectly:
- Prep Time: 15 minutes
- Baking Time: 20-25 minutes
- Cooling Time: 30 minutes (or longer for best results)
Following this timeline will help you manage your baking session efficiently.
Meal Prep & Storage Notes
These Peanut Butter Cup Cookie Bars are perfect for meal prep or making ahead of time. Here’s how to store them:
- Room Temperature: Store bars in an airtight container for up to 3 days.
- Refrigerator: They can last up to a week in the fridge.
- Freezer: For longer storage, freeze cut bars in a single layer, then transfer to a freezer-safe container. They can last for up to 3 months.
To enjoy them later, simply thaw at room temperature or pop them in the microwave for a few seconds before indulging.
Your Top Questions
Can I use natural peanut butter in this recipe?
Yes, you can use natural peanut butter, but it may be a bit runnier than creamy peanut butter. Be sure to stir it well before measuring to ensure the right consistency.
How can I make these bars more chocolatey?
Add more semisweet chocolate chips or even a swirl of melted chocolate on top before baking for an extra chocolatey treat!
Can I make these cookie bars vegan?
Yes! Substitute the egg with a flax egg (1 tablespoon ground flaxseed mixed with 2.5 tablespoons water), and replace the butter with a vegan alternative.
What should I serve with these bars?
These bars pair wonderfully with a scoop of vanilla ice cream, a drizzle of chocolate syrup, or even a side of Peanut Butter Banana Overnight Oats for a delicious breakfast treat!
Quick Weeknight Wins
Looking for more delicious options? Here are some quick recipes to try on busy weeknights:
- Chocolate Peanut Butter Cup Sheet Cake – A rich and decadent cake that’s perfect for chocolate lovers.
- Peanut Butter Banana Overnight Oats – A quick and nutritious breakfast option that’s ready in no time.
These recipes will help you create delicious meals and desserts that are sure to please!
Bring It Home
These Peanut Butter Cup Cookie Bars are not only fun to make but also a hit at gatherings, potlucks, or simply as a sweet treat for yourself. With their gooey texture and rich flavor, they’re bound to be a new favorite. So, gather your ingredients, fire up your oven, and get ready to enjoy a batch of these heavenly bars that everyone will love. Happy baking!
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Peanut Butter Cup Cookie Bars
Ingredients
- 1 cup all-purpose flour
- 1 teaspoon baking powder
- 1 teaspoon baking soda
- ½ teaspoon salt
- ½ cup unsalted butter melted
- 1 cup packed light brown sugar
- 1 large egg
- 2 teaspoons pure vanilla extract
- 1 cup mini peanut butter cups
- ½ cup semisweet chocolate chips
- 3 tablespoons creamy peanut butter
Instructions
- Preheat your oven to 350°F (175°C). Grease your 9x9-inch baking pan or line it with parchment paper for easier removal later.
- In a medium bowl, whisk together the flour, baking powder, baking soda, and salt until well combined. Set aside.
- In a large mixing bowl, combine the melted butter and brown sugar. Stir until the mixture is smooth. Then add the egg and vanilla extract, mixing until fully incorporated.
- Gradually add the dry ingredient mixture to the wet ingredients, stirring until just combined. Be careful not to overmix!
- Gently fold in the mini peanut butter cups and semisweet chocolate chips using a spatula. This is where the magic happens!
- Pour the batter into the prepared baking pan, spreading it evenly. Drizzle the creamy peanut butter over the top and use a knife to swirl it through the batter. Bake for 20-25 minutes, or until the edges are golden and a toothpick inserted into the center comes out mostly clean.
- Allow the bars to cool in the pan for about 10 minutes before transferring them to a wire rack to cool completely. Cut into squares and serve with a glass of milk or your favorite beverage!
Equipment
- 9x9-inch Baking Pan
- Mixing Bowls
- Whisk
- Spatula
- Parchment Paper
Notes
- For a gluten-free option, use a gluten-free flour blend.
- Store bars in an airtight container for up to 3 days at room temperature.
- Freeze cut bars for up to 3 months for longer storage.
