Peanut Butter Chocolate Chip Bars are my go-to when I want a soft and chewy dessert that slices cleanly and doesn’t feel fussy. They eat like the best part of a cookie, but in an easy bar form.
The flavor is straight-up peanut butter with plenty of rich chocolate, and the texture stays tender for days. I like that the edges get just a little golden while the middle stays thick and chewy.
For me, these are especially good for a cookie tray, a bake sale, or anytime I need a simple dessert that travels well. I’ll often finish them with a little flaky salt if I’m serving them with coffee.
Why You’ll Love This Recipe
Soft and Chewy: The centers stay tender and chewy, more like a thick cookie bar than a cakey blondie.
Big Peanut Butter Flavor: Peanut butter actually comes through here, not just as a background note.
Easy to Slice and Share: This is one of those desserts that cuts into neat bars once it’s cooled, which makes it great for bringing places.
One Pan Dessert: A 9×13 pan makes a generous batch, and it’s simple to serve without any extra decorating.
Flexible Mix-Ins: You can tweak the chips and add-ins depending on what you have, and it still bakes up reliably.
Ingredients You’ll Need
Peanut Butter Bars
- Unsalted butter: I like starting with softened butter so it creams smoothly. If it’s melted, the bars can bake up a little denser and oilier.
- Creamy peanut butter: Regular creamy peanut butter is the easiest and most consistent here. Natural works too, but it needs to be very well stirred and not super oily.
- Light brown sugar: This is where a lot of the chewiness comes from. Dark brown sugar works too if that’s what you have.
- Granulated sugar: Helps the bars set and gives a slightly crisp edge. I wouldn’t skip it.
- Eggs: Room temperature eggs mix in easier and keep the batter smooth.
- Vanilla extract: Simple, but it makes the peanut butter and chocolate taste more like “dessert” instead of just sweet.
- All-purpose flour: I use regular flour here. Measure it lightly so the bars don’t get dry.
- Baking powder: Gives just enough lift so the bars aren’t heavy.
- Fine salt: Don’t skip it, especially with peanut butter and chocolate.
- Semisweet chocolate chips: Semisweet is my go-to so they don’t get overly sweet. Milk chocolate is fine if that’s what you like.
Optional Finish
- Flaky salt: A little on top makes the chocolate taste deeper and cuts the sweetness. I use it when I’m serving these with coffee or bringing them to share.
Recipe Instructions
- Preheat the oven: Heat the oven to 350°F. Line a 9×13-inch pan with parchment paper and lightly grease it.
- Beat the butter and peanut butter: In a large bowl, beat the softened butter, peanut butter, brown sugar, and granulated sugar until smooth and fluffy.
- Add the eggs: Beat in the eggs one at a time, mixing until each is fully blended in.
- Add the vanilla: Mix in the vanilla extract until combined.
- Mix the dry ingredients: In a separate bowl, whisk the flour, baking powder, and salt together.
- Add the dry ingredients: Mix the flour mixture into the wet ingredients just until you no longer see dry flour.
- Fold in the chocolate chips: Stir in the chocolate chips, then spread the batter evenly in the prepared pan.
- Bake: Bake for 22 to 28 minutes, until the edges are set and lightly golden and the center is just set. Don’t overbake.
- Cool and slice: Cool completely in the pan for clean slices, then lift out using the parchment and cut into bars.
- Finish: Sprinkle with flaky salt if you’re using it, then serve.
Some of my tips!
This is the part that really makes a difference. If you only read one section, make it this one because this is where I share the little trick that helps the recipe turn out so well.
Recipe Tips & Tricks
Don’t overbake them. Pull the pan when the edges look set and lightly golden and the center looks just set. They’ll keep firming up as they cool.
Cool all the way before slicing. If you cut too soon, the middle will crumble and stick to the knife. I usually give it at least an hour, longer if the kitchen is warm.
Use natural peanut butter only if it’s well stirred. If there’s a lot of oil sitting on top, the batter can get greasy and bake unevenly. Stir until it’s totally smooth before you start.
Try a different mix-in combo. Swapping up to half the chocolate chips for peanut butter chips or chopped peanuts works really well and keeps the bars from tasting one-note.
Use the right pan if you want thick bars. A 9×9-inch pan makes them taller and a little gooier in the center, but you’ll need a longer bake time. Watch the center, not the clock.
Make some touches!
There are plenty of easy ways to serve this depending on the occasion. Keep it simple, or add a few small touches to make it feel a little more special.
Serving Suggestions
- Milk: A cold glass of milk is classic with these. It’s especially good if you add a little flaky salt on top.
- Coffee or espresso: These are really good with coffee, especially if you like a not-too-sweet dessert with it. I usually go for a latte or plain black coffee.
- Ice cream: Serve a bar with vanilla ice cream on the side if you want to turn it into a proper dessert plate. A little chocolate sauce doesn’t hurt either.
- Fruit: Strawberries or raspberries are nice alongside the bars. It keeps the plate from feeling too heavy.
Save it for later
This section covers how to store leftovers and what parts of the recipe you can prepare ahead of time.
Storage and Make Ahead
Store the bars airtight at room temperature for up to 4 days. I keep them in a container with a tight lid so the edges don’t dry out.
If you want to make them ahead, these are a good choice because the texture holds up well. I often bake them the day before I need them, then slice right before serving.
For longer storage, you can freeze the bars for up to 2 months. I like freezing them already cut, with parchment between layers so they don’t stick.
Let frozen bars thaw at room temperature until soft, or warm one briefly if you like them a little gooey. Either way works.
A few quick answers
This section covers a few extra details that may help before you head to the recipe card.
Recipe FAQs
Can I use natural peanut butter?
You can, as long as it’s well stirred and not overly oily. If the jar is separated with a thick layer of oil on top, stir it until completely smooth before measuring.
How do I know when the bars are done?
I look for set, lightly golden edges and a center that looks just set, not wet. If you wait until the center looks fully firm, they usually end up a little dry once cooled.
Can I bake these in a 9×9-inch pan?
Yes, you’ll get thicker bars. Plan on baking longer and start checking around the 28-minute mark, then keep going until the center is just set.
Can I swap the chocolate chips for something else?
Definitely. You can replace up to half the chocolate chips with peanut butter chips, chopped peanuts, or even chopped chocolate if that’s what you have.
Why did my bars crumble when I cut them?
Most of the time it’s because they were sliced before they were fully cool. Let them cool completely in the pan, then lift them out and cut with a sharp knife.
You might also like
Before you go, take a look at a few other recipes below the recipe card. They use similar ingredients in a different way and are worth saving too.
MORE DINNER RECIPES TO TRY
Peanut Butter Chocolate Chip Bars
INGREDIENTS
Peanut Butter Bars
- 1/2 cup unsalted butter softened
- 1 cup creamy peanut butter
- 1 cup light brown sugar packed
- 1/2 cup granulated sugar
- 2 large eggs room temperature
- 2 tsp vanilla extract
- 1 1/2 cups all purpose flour
- 1 tsp baking powder
- 1/2 tsp fine salt
- 1 1/2 cups semisweet chocolate chips.
Optional Finish
- flaky salt to taste.
INSTRUCTIONS
Prep and batter
- heat oven to 350 F and line a 9x13 inch pan with parchment and lightly grease
- beat butter peanut butter brown sugar and granulated sugar until smooth and fluffy
- beat in eggs one at a time then mix in vanilla
- whisk flour baking powder and salt in a separate bowl then mix into wet ingredients just until combined
- fold in chocolate chips and spread evenly in pan.
Bake and serve
- bake until edges are set and lightly golden and center is just set 22 to 28 minutes do not overbake
- cool completely in pan for clean slices then lift out and cut into bars
- sprinkle with flaky salt if using.
