Peanut Butter Bars Recipe
If you’re on the hunt for a rich, creamy, and utterly irresistible treat, this Peanut Butter Bars Recipe is about to become your new go-to dessert. These bars boast a perfect balance of peanut butter’s nutty goodness with a delightful crunch from graham cracker crumbs and roasted peanuts, all topped with a luscious chocolate layer. Whether you’re making them for a weeknight dessert, a potluck, or an indulgent snack, these bars deliver a melt-in-your-mouth experience that’s hard to beat.
Why You’ll Keep Making It
This Peanut Butter Bars Recipe is more than just a sweet treat. It’s incredibly simple to whip up, requiring no baking skills or fancy equipment. The creamy peanut butter base paired with the slightly crunchy graham cracker crumbs creates a texture that’s both satisfying and comforting. Plus, the combination of chocolate and peanut butter is a timeless classic that appeals to every age group. These bars are perfect for anyone who loves easy, no-fuss desserts that pack a punch of flavor and texture. Once you try them, you’ll find yourself reaching for this recipe time and again.
Gather These Ingredients
- 1 cup unsalted butter, melted and slightly cooled – ensures the bars hold together with a smooth, rich flavor
- 1 1/2 cups creamy peanut butter – the star ingredient that brings that luscious, nutty taste
- 1 1/2 cups powdered sugar – for sweetness and a silky texture
- 2 cups graham cracker crumbs – adds a delightful crunch and complements the peanut butter perfectly
- 1 1/2 cups chopped chocolate – to melt over the bars, creating a rich, indulgent topping
- 1/4 cup creamy peanut butter – for swirling into the melted chocolate topping
- 1/4 cup roasted peanuts, chopped – adds a bit of extra crunch and a salty contrast
Cook’s Kit
- 9×13 inch baking pan – to shape and set the bars perfectly
- Mixing bowls – for combining ingredients effortlessly
- Measuring cups and spoons – for precision
- Microwave-safe bowl – to melt butter and chocolate
- Spatula – to spread and smooth layers evenly
- Knife – for chopping chocolate and peanuts
- Parchment paper – to line the baking pan for easy removal
Peanut Butter Bars Recipe — Do This Next

Step 1: Prepare the Base
In a large mixing bowl, combine the melted, slightly cooled butter with the creamy peanut butter. Stir until smooth and fully blended. Next, add the powdered sugar and graham cracker crumbs. Mix everything together until you get a thick, crumbly dough that holds when pressed.
Step 2: Press Into Pan
Line your 9×13 inch baking pan with parchment paper, leaving some overhang for easy removal later. Transfer the peanut butter mixture into the pan and press it down firmly and evenly, creating a compact base layer.
Step 3: Melt the Chocolate and Peanut Butter
In a microwave-safe bowl, combine the chopped chocolate and 1/4 cup creamy peanut butter. Heat in 30-second intervals, stirring between each, until the mixture is smooth and glossy.
Step 4: Spread Chocolate Layer
Pour the melted chocolate and peanut butter mixture over the prepared base. Use a spatula to spread it evenly, covering every corner.
Step 5: Add the Crunch
Sprinkle the chopped roasted peanuts evenly over the melted chocolate layer. Gently press them down to ensure they stick as the chocolate cools.
Step 6: Chill and Set
Place the baking pan in the refrigerator for at least 2 hours or until the bars are completely firm. Once set, use the parchment paper overhang to lift the bars out of the pan. Cut into squares or rectangles and enjoy!
Substitutions by Category

- Butter: Substitute with coconut oil for a dairy-free twist or margarine if preferred.
- Peanut Butter: Use almond butter or sunflower seed butter for a different nutty flavor.
- Chocolate: Swap semi-sweet chocolate for dark or milk chocolate according to your taste.
- Graham Cracker Crumbs: Use crushed digestive biscuits or vanilla wafers as an alternative.
- Roasted Peanuts: Toasted almonds or cashews work well for a nutty crunch.
Problems & Prevention
- Bars are too crumbly: Make sure your butter is melted but not too hot when mixing; also, press the base firmly into the pan.
- Chocolate topping won’t set: Ensure the bars chill long enough in the refrigerator and the chocolate is fully melted before spreading.
- Peanut butter separation: Stir peanut butter well before measuring to avoid oil separation affecting texture.
- Uneven layers: Use a spatula to smooth layers carefully and tap the pan gently on the counter to level the base.
Freezer-Friendly Notes
This Peanut Butter Bars Recipe freezes beautifully! Wrap individual bars or the entire slab tightly in plastic wrap and then place in an airtight container or freezer bag. Freeze for up to 3 months. When ready to enjoy, thaw in the refrigerator overnight or at room temperature for about an hour. This makes it a fantastic make-ahead dessert for busy days or unexpected guests.
Common Qs About Peanut Butter Bars Recipe
Can I use crunchy peanut butter instead of creamy?
Yes! Crunchy peanut butter will add extra texture to your bars, making them even nuttier and more satisfying. Just be sure to mix it well with the other ingredients to ensure even distribution.
Do I have to refrigerate the bars?
Refrigeration helps the bars set properly and keeps the chocolate topping firm. If left at room temperature, the bars may become too soft and sticky, especially in warmer climates.
Can I make these bars gluten-free?
Absolutely! Simply substitute the graham cracker crumbs with gluten-free graham crackers or gluten-free cookie crumbs. This swap won’t change the delicious flavor much.
How long will these bars stay fresh?
Stored in an airtight container in the refrigerator, these bars will stay fresh for up to 5 days. For longer storage, freezing is your best bet.
Don’t Miss These
- Peanut Butter Chocolate Chip Toffee Bars – A delightful twist combining toffee and chocolate chips with peanut butter goodness.
- Chocolate Graham Crunch Bars – For those who adore the crispy graham cracker texture with a rich chocolate punch.
- Butter Pecan Pound Cake With Maple Glaze – A moist and buttery cake that’s perfect for pairing with your peanut butter bars.
Before You Go
Before you dive into making these bars, gather all your ingredients and tools to streamline the process. Remember, the key to the perfect Peanut Butter Bars Recipe lies in properly melting the butter and chocolate and giving the bars enough time to chill. This recipe is wonderfully forgiving, so feel free to experiment with different nut butters or chocolates to make it your own. Whether you’re serving these at a family gathering or enjoying them as a personal treat, they’re sure to be a crowd-pleaser.
These bars are a testament to the classic peanut butter and chocolate combo, elevated with a crunchy graham cracker base and roasted peanuts. So, grab your mixing bowl and get ready to create a dessert that will have everyone asking for seconds!
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Peanut Butter Bars Recipe
Ingredients
- 1 cup unsalted butter melted and slightly cooled
- 1 1/2 cups creamy peanut butter
- 1 1/2 cups powdered sugar
- 2 cups graham cracker crumbs
- 1 1/2 cups chopped chocolate
- 1/4 cup creamy peanut butter for swirling into the melted chocolate topping
- 1/4 cup roasted peanuts chopped
Instructions
- In a large mixing bowl, combine the melted, slightly cooled butter with the creamy peanut butter. Stir until smooth and fully blended. Next, add the powdered sugar and graham cracker crumbs. Mix everything together until you get a thick, crumbly dough that holds when pressed.
- Line your 9x13 inch baking pan with parchment paper, leaving some overhang for easy removal later. Transfer the peanut butter mixture into the pan and press it down firmly and evenly, creating a compact base layer.
- In a microwave-safe bowl, combine the chopped chocolate and 1/4 cup creamy peanut butter. Heat in 30-second intervals, stirring between each, until the mixture is smooth and glossy.
- Pour the melted chocolate and peanut butter mixture over the prepared base. Use a spatula to spread it evenly, covering every corner.
- Sprinkle the chopped roasted peanuts evenly over the melted chocolate layer. Gently press them down to ensure they stick as the chocolate cools.
- Place the baking pan in the refrigerator for at least 2 hours or until the bars are completely firm. Once set, use the parchment paper overhang to lift the bars out of the pan. Cut into squares or rectangles and enjoy!
Equipment
- 9x13 inch baking pan
- Mixing Bowls
- Measuring Cups and Spoons
- Microwave-safe bowl
- Spatula
- Knife
- Parchment Paper
Notes
- Press the peanut butter base firmly into the pan to prevent crumbly bars.
- Chill bars long enough to ensure the chocolate topping sets properly.
- Substitute ingredients like almond butter or coconut oil for dietary preferences.
- Freeze bars wrapped tightly for up to 3 months for make-ahead convenience.
- Use parchment paper overhang to easily remove bars from the pan for neat cutting.

