These peanut butter chocolate chip cookie bars are my childhood in dessert form! I can still remember coming home from school to the smell of peanut butter cookies baking, and let me tell you, turning that classic flavor into easy-to-share bars was a game changer. These rich, chewy squares combine everything we love about peanut butter cookies with melty chocolate chips, and they come together in one simple pan.
What I love most (besides eating them, obviously) is how foolproof this recipe is. No fancy mixer skills required – just good old-fashioned stirring and spreading. The texture walks that perfect line between soft and substantial, with crispy edges giving way to that irresistible peanut butter chewiness. And the chocolate? Well, let’s just say I may have “accidentally” doubled the chips last time I made these. Oops!

These bars disappear fast at parties, but honestly? I won’t judge if you keep the whole pan for yourself. They’re that good. Just promise me one thing – don’t skip letting them cool completely before cutting. I know it’s torture to wait, but trust me, it makes all the difference in getting those perfect clean slices.
Ingredients for Peanut Butter Chocolate Chip Cookie Bars
Okay, let’s gather our goodies! Here’s everything you’ll need to make these irresistible bars. I’ve learned through trial and error (and many happy taste tests) that quality ingredients really make a difference here. Don’t skimp on the peanut butter – I always use the regular kind, not natural, for the best texture. Here’s the lineup:
- Dry Team:
- 1 1/2 cups all-purpose flour (spooned and leveled – no packing!)
- 1/4 teaspoon salt (I use kosher)
- 1/2 teaspoon baking soda (make sure it’s fresh!)
- Sweet & Creamy Crew:
- 3/4 cup packed brown sugar (dark gives extra flavor)
- 1/2 cup granulated sugar
- 3/4 cup creamy peanut butter (not natural/oily kind)
- 1/2 cup unsalted butter, softened (I leave mine out for 30 minutes)
- The Extras:
- 1 large egg (room temperature blends better)
- 1 teaspoon vanilla extract (the real stuff, please!)
- 12 oz package semi-sweet chocolate chips
- 12 oz package peanut butter chips (or Reese’s pieces for fun!)
See? Nothing too fancy – just pantry staples that come together magically. Pro tip: measure everything before you start mixing. It makes the process so much smoother when you’re not scrambling mid-recipe!
How to Make Peanut Butter Chocolate Chip Cookie Bars
Alright, let’s get baking! These bars come together so easily – I swear even my 10-year-old nephew could make them (and he once burned microwave popcorn). Just follow these simple steps and you’ll have perfect peanut butter chocolate chip heaven in no time.
Preparing the Dough
First things first – preheat that oven to 350°F and grab your trusty 9×13 inch baking pan. Give it a good greasing or line it with parchment paper (my lazy baker hack). Now let’s make some magic!
In a medium bowl, whisk together your flour, salt, and baking soda. No lumps allowed! Set this dry team aside while we work on the good stuff. In your stand mixer or large bowl, beat the brown sugar, peanut butter, softened butter, and granulated sugar until it’s light and fluffy – about 2 minutes. Scrape down those sides! Nothing worse than finding pockets of unmixed ingredients later.
Add your egg and vanilla, mixing just until incorporated. Now slowly add the flour mixture on low speed. I mean it – go slow! Overmixing makes tough bars, and we want tender, chewy perfection. When it just comes together, grab a sturdy spoon and fold in those glorious chocolate and peanut butter chips by hand. The dough will be thick – that’s exactly what we want!
Baking and Cooling
Time to spread that deliciousness into your prepared pan. I wet my fingers slightly to press it evenly without sticking. Pop it in the oven and set your timer for 25 minutes – but start checking at 20. You’ll know they’re done when the edges turn golden brown and the center looks set but still slightly soft. A toothpick should come out with moist crumbs, not wet batter.

Here comes the hardest part – WAITING! Let those bars cool completely in the pan on a wire rack. I know, I know – the smell is torture. But cutting too soon leads to crumbly messes, and we want those perfect squares. About an hour does the trick. Then slice into 16 generous bars and try not to eat them all at once!
Tips for Perfect Peanut Butter Chocolate Chip Cookie Bars
After making these bars approximately a million times (okay, maybe a dozen), I’ve picked up some foolproof tricks to guarantee bakery-worthy results every time. Here are my can’t-live-without tips:
- Butter temperature matters! Too soft and your bars spread thin; too cold and they won’t cream properly. It should leave a slight indent when pressed but still hold its shape.
- Line your pan with parchment paper with overhanging edges. This makes lifting out the whole slab for clean slicing a breeze – no more fighting with stuck corners!
- Resist overmixing the flour. Stir just until the last streaks disappear. Overworked dough = tough bars, and we’re all about that chewy texture.
- Press dough firmly into the pan to eliminate air pockets. I use the bottom of a measuring cup for an even layer.
- Underbake slightly! The bars continue cooking as they cool. Take them out when the center still looks a tiny bit underdone for ultimate softness.
Follow these simple tricks, and you’ll be the peanut butter chocolate chip bar hero of every potluck!
Variations on Peanut Butter Chocolate Chip Cookie Bars
Oh, the possibilities! These bars are like your favorite jeans – perfect as-is, but so fun to dress up. Swap peanut butter chips for Reese’s Pieces (they make the bars extra colorful and crunchy) or try dark chocolate chips for a richer flavor. My personal favorite? A sprinkle of flaky sea salt right after baking – it makes all that sweet, peanut buttery goodness pop!
Storing Peanut Butter Chocolate Chip Cookie Bars
Here’s how to keep your bars tasting fresh (if they last that long!). At room temperature, store them in an airtight container with parchment between layers – they’ll stay perfect for up to 5 days. Want to freeze? Wrap individual bars tightly in plastic, then foil. They’ll keep for 3 months – just thaw at room temp when that peanut butter craving hits. Pro tip: A quick 10-second microwave zap makes them taste freshly baked again!
Nutritional Information for Peanut Butter Chocolate Chip Cookie Bars
Okay, let’s be real – we’re not eating cookie bars for their health benefits! But if you’re curious (or need to justify that second bar), here’s the scoop. Values are estimates and will vary based on your specific brands. Per serving (that’s 1 delicious bar):
- 280 calories
- 14g fat (6g saturated)
- 35g carbs
- 20g sugar
- 5g protein
I always say life’s too short to skip dessert – just balance it out with an extra veggie at dinner! Now pass me another bar…
FAQs About Peanut Butter Chocolate Chip Cookie Bars
I get so many questions about these bars – here are the ones that pop up most often in my kitchen and comments section. Consider this your peanut butter chocolate chip cheat sheet!
Can I use natural peanut butter?
Oh honey, I’ve been there – staring at that oily natural peanut butter jar, wondering if it’ll work. Honestly? I don’t recommend it. The extra oil changes the texture completely, giving you greasy bars that don’t hold together well. Stick with regular creamy peanut butter (like Jif or Skippy) for perfect results every time.
How do I prevent dry bars?
Three words: don’t overbake them! Pull them out when the edges are golden but the center still looks slightly underdone. They’ll finish setting as they cool. Also, measure your flour correctly – spoon it into the measuring cup and level it off. Packed flour = dry, dense bars nobody wants.
Can I double the recipe?
Absolutely! Just use two pans instead of cramming it all into one. Trying to bake a double batch in a single pan leads to uneven baking and a gooey middle. Trust me – I learned this the hard way during a Christmas baking frenzy. Two pans means perfect bars every time!
Tag Us If You Make These!
Nothing makes me happier than seeing your peanut butter chocolate chip cookie bar creations! Snap a pic of your masterpiece (or that first glorious bite) and tag me.
Got questions while baking? DM me – I’m always here to help troubleshoot. And if you came up with an amazing variation (sea salt caramel swirl? peanut butter cup chunks?), PLEASE share the details! We’re all in this delicious dessert journey together.
Now go forth and bake up some peanut butter chocolate chip magic – I can’t wait to see (and virtually taste) your bars!
Print
Peanut Butter Chocolate Chip Cookie Bars You Crave Instantly
- Total Time: 45 minutes
- Yield: 16 bars 1x
- Diet: Vegetarian
Description
Rich and chewy peanut butter chocolate chip cookie bars that are easy to make and perfect for sharing.
Ingredients
- 1 1/2 cup flour
- 1/4 teaspoon salt
- 1/2 teaspoon baking soda
- 3/4 cup brown sugar
- 3/4 cup peanut butter
- 1/2 cup butter or margarine, softened
- 1/2 cup sugar
- 1 egg
- 1 teaspoon vanilla extract
- 12 ounce package chocolate chips
- 12 ounce package peanut butter chips
Instructions
- Preheat your oven to 350°F and generously grease a 9×13 baking pan.
- In a medium bowl, whisk together the flour, salt, and baking soda.
- In a stand mixer, beat the brown sugar, peanut butter, butter, and granulated sugar until smooth. Add the egg and vanilla extract, mixing until incorporated.
- Gradually add the flour mixture on low speed until a thick dough forms.
- Stir in the chocolate chips and peanut butter chips by hand.
- Press the dough into the prepared pan and spread evenly.
- Bake for 25 to 30 minutes until edges are golden and center is set.
- Cool completely on a wire rack before slicing into 16 squares.
Notes
- Store in an airtight container for up to 5 days.
- For a crispier texture, bake for an additional 2-3 minutes.
- Prep Time: 15 minutes
- Cook Time: 25-30 minutes
- Category: Dessert
- Method: Baking
- Cuisine: American
Nutrition
- Serving Size: 1 bar
- Calories: 280
- Sugar: 20g
- Sodium: 150mg
- Fat: 14g
- Saturated Fat: 6g
- Unsaturated Fat: 5g
- Trans Fat: 0g
- Carbohydrates: 35g
- Fiber: 2g
- Protein: 5g
- Cholesterol: 25mg