Peanut butter chocolate chip bars bake in one pan and deliver a chewy, golden cookie base packed with melty chocolate and a deep peanut flavor.
The dough comes together in a single bowl with no chilling and no scooping. Expect about 10 minutes of mixing, 25 minutes in the oven, and a short cooling time before you slice them into squares.
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Why This Peanut Butter Chocolate Chip Bars Recipe Works
A pan makes cookies faster. Spreading the dough in a 9×13 inch pan means no scooping, no batches, and no tray rotation.
Brown sugar keeps them chewy. Its molasses holds moisture, so the bars stay soft in the center and crisp at the edges.
Two flavors share the stage. Peanut butter brings salt and richness while the chips add pockets of melted chocolate in every bite.
Ingredients for Peanut Butter Chocolate Chip Bars
- 3/4 cup salted butter, softened, about 170 grams
- 1/2 cup creamy peanut butter, about 128 grams
- 2 large eggs
- 1 1/2 cups packed light brown sugar, about 318 grams
- 1 tbsp vanilla extract
- 2 1/4 cups all purpose flour, about 284 grams
- 1 tsp baking soda
- 1 1/2 cups semisweet chocolate chips
Butter. Salted butter adds seasoning, so no extra salt is needed. It should be soft but not shiny.
Peanut butter. Use a creamy, shelf stable kind for a smooth dough. Natural styles can make the bars greasy.
Brown sugar. Pack it into the measuring cup. Light brown gives a gentle caramel flavor.
Flour. Spoon it into the cup and level it off. Too much flour makes the bars dry.
Chocolate chips. Semisweet chips balance the sweet dough. Milk chocolate or peanut butter chips also work.
How to Make Peanut Butter Chocolate Chip Bars
1. Prep the pan Heat the oven to 350 degrees F. Line a 9×13 inch pan with parchment paper and grease the paper lightly.
2. Cream the fats Beat the butter, peanut butter, and brown sugar for 2 to 3 minutes until fluffy and pale.
3. Add eggs and vanilla Beat in the eggs one at a time, then the vanilla, until the mixture looks glossy.
4. Add the dry mix Whisk the flour and baking soda together, then stir them in just until no streaks remain. Fold in the chocolate chips.
5. Spread and bake Press the dough evenly into the pan with a spatula. Bake for 20 to 25 minutes, until the edges are golden and the center looks just set.
6. Cool and cut Cool in the pan for 30 minutes, lift out using the parchment, and cut into 16 bars.
How to Serve Peanut Butter Chocolate Chip Bars
Serve the bars at room temperature with a cold glass of milk, or warm one slightly and top it with ice cream. They pair well with thick bakery chocolate chip cookies on a cookie tray, a creamy banana blueberry smoothie for breakfast, fudgy chocolate chunk brownies for a sweet platter, and peanut butter cup cookie bites for peanut butter fans.
How to Store and Reheat Peanut Butter Chocolate Chip Bars
Store the bars in an airtight container at room temperature for up to 4 days. For longer storage, freeze them in a single layer, then stack with parchment for up to 3 months. Thaw at room temperature, and warm one for 10 seconds in the microwave for a fresh baked feel.
Tips and Variations for Peanut Butter Chocolate Chip Bars
Do not overbake. Pull the pan when the center still looks slightly soft, since the bars firm up as they cool.
Line the pan. Parchment lets you lift the whole slab out for clean cuts.
Soften the butter properly. Press a finger into it. It should leave a dent without sliding.
Mix the flour gently. Stop as soon as the streaks disappear for the softest crumb.
Add extra texture. Stir in 1/2 cup chopped roasted peanuts with the chips.
Skip the raw dough. Do not taste the dough, since it contains raw eggs and uncooked flour.
Flag the allergens. These bars contain peanuts, wheat, eggs, and milk, so check labels and warn guests with allergies.
Check trusted guidance. For more detail on safe handling and storage, read the University of Minnesota Extension guide to storing leftovers.
Frequently Asked Questions About Peanut Butter Chocolate Chip Bars
Why are my peanut butter chocolate chip bars dry?
Overbaking or too much flour are the usual causes. Spoon and level the flour and pull the pan while the center looks just set.
Can I make peanut butter chocolate chip bars with crunchy peanut butter?
Yes. Crunchy peanut butter adds texture and works in the same amount.
How do I cut peanut butter chocolate chip bars cleanly?
Cool them for at least 30 minutes, lift them out with the parchment, and use a sharp knife wiped between cuts.
Can I use unsalted butter?
Yes. Add 1/4 teaspoon salt to the flour to replace the seasoning.
Can I freeze the bars?
Yes. Freeze them in a single layer, then wrap them well and keep them for up to 3 months.
Peanut Butter Chocolate Chip Cookie Bars
Equipment
- 9×13-inch baking pan
- Parchment paper
- Mixing bowls
- Hand mixer or stand mixer
- Rubber spatula
Ingredients
Main Ingredients
- ¾ cup salted butter softened, about 170 grams
- ½ cup creamy peanut butter about 128 grams
- 2 large eggs
- 1 ½ cup light brown sugar packed, about 318 grams
- 1 tbsp vanilla extract
- 2 ¼ cup all purpose flour about 284 grams
- 1 tsp baking soda
- 1 ½ cup semisweet chocolate chips
Instructions
Cooking
- Prep. Heat the oven to 350 degrees F and line a 9×13 pan with greased parchment.
- Mix. Beat the butter, peanut butter, and sugar until fluffy, then beat in the eggs and vanilla.
- Add the dry mix. Stir in the flour and baking soda, then fold in the chips.
- Bake. Press the dough into the pan and bake for 20 to 25 minutes until the edges are golden.
- Cool. Cool for 30 minutes, lift out, and cut into 16 bars.
