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Peanut Butter Cookie Bars are the easy cousin of your classic cookie, baked in one simple pan and sliced into golden perfections. The texture is a cross between a soft baked cookie and a fudgy blondie that absolutely melts in your mouth. They’re very peanut-y, but the sweetness of brown sugar and vanilla balances it out. A scattering of chocolate chips throughout the batter adds little pools of melty richness in every bite. These bars are pure comfort, soft in the middle and slightly crispy on the outside and full of nostalgic flavor.
If you’re anything like me, you love a good shortcut in the kitchen—especially one that doesn’t sacrifice flavor. That’s exactly what these cookie bars deliver. They’re everything you love about classic peanut butter cookies, but baked all at once and sliced into bars. Less scooping, less mess, more time to enjoy the people you love.
Sometimes we need shortcuts, but when I want to spend a little more time, I love to make Birds Nest Cookies, Snowball Cookies, and even Breakfast Cookies. Cookies for breakfast? Sign me up! (Don’t worry, they have good stuff in them.)
Why you’ll love this recipe:
Ingredient Notes
A few details about the ingredients in this recipe to set you up for success.
- Butter – Salted or unsalted is fine in this recipe. Adds richness and helps with that soft, chewy texture.
- Brown sugar – For moisture and deep caramel flavor.
- Honey or maple syrup – By using honey, I was able to remove 1 cup of granulated sugar from the recipe (a little better for you). It helps keep the bars intact (chewy, not crumbly) without overpowering the peanut butter flavor. It still adds the slight sweetness and the stickiness that is needed. These were also tested with corn syrup, so if you like a cheaper option, you can use that instead.
- Peanut butter – Use smooth, shelf-stable peanut butter like Jif or Skippy. Natural peanut butters (even thought I’m a big fan) won’t give the right texture.
- Vanilla extract – makes everything better in my opinion! Feel free to use a little extra if you like.
- Flour – All-purpose is perfect here. You can sub a 1:1 gluten-free blend if needed. As usual, texture isn’t quite the same for gluten free. If you need a great gluten free cookie, try these Chocolate Hazelnut Drop Cookies.
- Chocolate chips – Semi-sweet gives a nice balance, but use what you love. My personal favorite is dark chocolate.
- Chopped peanuts (optional) – Adds a little crunch and extra peanut flavor on top.
How to Make Peanut Butter Cookie Bars
Be sure to check out the full recipe and ingredient list in the recipe card below.
- Cream the butter, sugar, and syrup, using a stand mixer, until it’s fluffy, add the peanut butter, egg, and vanilla and mix until smooth.
- Add the flour, a couple tablespoons at a time, and mix until just combined.
- Stir in the chocolate chips using a rubber spatula to gently mix them in.
- Press into the pan, top with more chocolate chips (and peanuts, if using), and bake until golden around the edges.
Let them cool completely before slicing—trust me on this one. The texture is perfect once they’ve had time to set.
Chellie’s Tips
- Prep the pan- Line it with parchment paper for easy removal. You can just lift it out and place them on a flat surface to cut.
- Don’t overbake – The center should still look a little soft when you pull them out. They’ll finish setting as they cool.
- Let them cool completely – I know it’s hard, but it makes all the difference. Cutting them too soon = crumbly bars.
- Use the right peanut butter – No-stir peanut butter (like Jif or Skippy) gives the best texture. You know I LOVE my natural peanut butter, but I sacrifice for texture here.
- Customize with what you have – Swap chocolate chips for peanut butter chips, add a swirl of jam or Nutella, or sprinkle with flaky sea salt before baking.
- Want cleaner cuts? Wipe your knife between slices and use a plastic knife if you’re cutting them right in the pan.
- Make them pretty-Sprinkle chopped peanuts and some reserved chocolate chips over the top of the bars before baking.
Frequently Asked Questions
I don’t recommend it for this recipe. It’s usually too oily or runny and can throw off the texture. Stick with a no-stir peanut butter like Jif or Skippy for best results.
You can try using a 1:1 gluten-free flour blend. Make sure it includes xanthan gum if your blend doesn’t already have it. I haven’t personally tested these with gluten free flour, typically texture is not the same, so just keep that in mind.
They freeze great. Once cooled, slice the bars and freeze in a single layer. Then transfer to an airtight container or bag. Let them thaw at room temp when you’re ready to serve.
Optional Add-Ins & Variations
These bars are super versatile, and sometimes a small tweak gives them a whole new vibe. Here are some fun ways to switch things up:
🍫 Chocolate Lovers
- Double chocolate – Stir in 1 tablespoon of cocoa powder and use chocolate chunks or dark chocolate chips.
- Peanut butter cup bars – Press chopped mini Reese’s into the top before baking.
- Swirl in Nutella – Drop spoonfuls over the top and swirl with a butter knife before baking.
🥜 Nutty or Crunchy
- Crunchy peanut butter – Swap out the smooth PB for crunchy to add texture.
- Chopped pretzels – Sprinkle on top for extra crunch and a salty finish.
- Reeces Pieces or peanut butter chips – Sprinkle on top instead of chocolate chips.
🍓 Fruity Twists
- Jam swirl – Drop spoonfuls of raspberry or strawberry jam over the top and gently swirl before baking. Top with nuts and chocolate chips.
- PB&J vibes – Use half chocolate chips and half dried strawberries or freeze-dried raspberries in the dough.
🍬 Sweet Tooth Style
- Butterscotch chips – Swap or mix with chocolate chips for a rich, caramel flavor.
- M&Ms – Especially fun for holidays or parties. Color-coordinate them for the season or to match your favorite teams colors.
- White chocolate + dried cranberries – A fancier twist that’s great for gifting.
🧂 A Little Extra
- Flaky sea salt – Sprinkle over the top right before baking to balance out the sweetness.
- Espresso powder – Add ½ tsp to the batter for a subtle mocha flavor.
Don’t be afraid to play! These cookie bars are super forgiving, and your pantry probably has something fun to try already.
Storing and Freezing
Store leftovers in an airtight container or covered in plastic wrap for up to 3 days.
You can freeze these bars in an airtight container for up to 3 months. Thaw at room temperature when you are ready to serve.
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These Peanut Butter Chocolate Chip Cookie Bars are more than just a treat—they’re a reason to gather, slow down, and savor a moment together. Whether it’s after a long day of school, a spontaneous drop-in from a friend, or a cozy family movie night, there’s something about warm, melty cookie bars that invites connection.
So go ahead—bake a batch, grab the milk, and call your people to the table.
Peanut Butter Cookie Bars
Equipment
- 8×8 square pan
- parchment paper
- stand mixer with whisk attachment
Ingredients
- 1/2 cup butter 4oz, 115g (salted or unsalted)
- 1/2 cup brown sugar 3.5oz, 100g
- 2 tablespoon honey or maple syrup or corn syrup
- 1/2 cup creamy peanut butter 4.4oz, 125g
- 1 egg
- 1 teaspoon vanilla extract
- 1 cup all purpose flour 5.3oz, 150g
- 3/4 cup chocolate chips 4.6oz, 130g
- 2 tablespoons chopped peanuts optional
Instructions
- Preheat your oven to 350 degrees Fahrenheit. Line an 8×8 square pan with parchment paper.
- In the bowl to your stand mixer, beat the butter, brown sugar and corn syrup on high speed until fluffy.1/2 cup butter, 1/2 cup brown sugar, 2 tablespoon honey
- Add the peanut butter, egg and vanilla extract and beat on medium speed until combined.1/2 cup creamy peanut butter, 1 egg, 1 teaspoon vanilla extract
- Turn down the mixer to low speed and slowly add the flour, a couple of tablespoons at a time, until just combined.1 cup all purpose flour
- Reserve 2 tablespoons of the chocolate chips and add the remaining chocolate chips to the batter and use a rubber spatula to fold them through.3/4 cup chocolate chips
- Spoon the batter into the prepared pan and spread out evenly.
- Sprinkle the chopped peanuts (if using) and reserved chocolate chips over the top of the bars.2 tablespoons chopped peanuts
- Bake for 25 minutes. Cool the bars completely in the pan before slicing and serving.
Notes
- Peanut Butter Cookie Bars are the easy cousin of your classic cookie — baked in one simple pan and sliced into golden perfections. The texture is a cross between a soft baked cookie and a fudgy blondie that absolutely melts in your mouth. They’re very peanut-y, but the sweetness of brown sugar and vanilla balances it out. A scattering of chocolate chips throughout the batter adds little pools of melty richness in every bite. These bars are pure comfort, soft in the middle and slightly crispy on the outside and full of nostalgic flavor.
- Store leftovers in an airtight container or covered in plastic wrap for up to 3 days.
- You can freeze these bars in an airtight container for up to 3 months. Thaw at room temperature when you are ready to serve.
- Use the commercial creamy peanut butter like Skippy or Jif. Natural peanut butters don’t give the same texture.
- I used smooth peanut butter for this recipe but crunchy peanut butter works too.
- It’s tempting to dive into the pan straight from the oven but it really needs time to cool so that the cookie can set and won’t be crumbly when you slice them.
- If you find peanut butter cookies a little too sweet, sprinkle a little bit of sea salt over the top before baking. Have a little fun with it.
- I used chocolate chips but peanut butter or butterscotch chips or even a swirl of jam or nutella can be fun to add and will give you a different flavours and textures.
- See the post for lots of variations on flavor and for more expert tips.
Nutrition
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This cracked me up! Thank you so much for your kind review. I couldn’t agree more.
I intended to be generous. Truly, I did. I even set these PB Cookie Bars on a platter, ready to share with everyone around me. Then I took a bite… these are so tasty that they turned me into a snack hoarder with trust issues. If you are looking for a treat to share, I would look elsewhere. But if you are looking for a dessert that will give you an excuse to eat the whole pan and make you question your moral compass, you are going to love this one. Will definitely be making it again but don’t tell anyone!