There’s something undeniably magical about the combination of peanut butter and chocolate. These Peanut Butter Chocolate Cookie Bars are a deliciously simple way to satisfy any sweet tooth, combining rich chocolate with creamy peanut butter in a chewy, delightful treat. Perfect for any occasion, these bars come together quickly with minimal fuss, making them an excellent choice for both novice and seasoned bakers alike. Whether you’re packing them for a lunchbox surprise or serving them at a gathering, these bars are certain to impress.
Why I Love This Recipe

This recipe is a testament to the beauty of simplicity. With just a handful of ingredients, you can create something that not only looks beautiful but tastes divine. The way the sweetness of the sugar complements the creaminess of the peanut butter and the richness of the melted chocolate is pure bliss. And let’s not forget the crunch from the coarsely chopped peanuts, which adds another layer of texture to each bite. Plus, these bars are incredibly versatile; you can enjoy them as a dessert, snack, or even a pick-me-up treat during the day.
Ingredient Rundown
To create these delightful Peanut Butter Chocolate Cookie Bars, you’ll need the following ingredients:
- 1 cup peanut butter: This will be the star of the show, providing that rich, nutty flavor.
- 1 cup sugar: Adds the necessary sweetness to balance the flavors.
- 2 eggs: These will help bind the ingredients together for a chewy texture.
- 1 can (14 ounces) sweetened condensed milk: This adds moisture and sweetness, making the bars incredibly rich.
- 2 ounces unsweetened baking chocolate, melted and cooled: This will bring that deep chocolate flavor to the cookie bars.
- 1 teaspoon vanilla extract: A hint of vanilla elevates the overall flavor profile.
- ½ cup coarsely chopped peanuts: These provide a satisfying crunch and enhance the peanut flavor.
Equipment & Tools
Before diving into the baking process, it’s essential to gather your tools. Here’s what you’ll need:
- Mixing bowls: For combining all your ingredients.
- Measuring cups and spoons: Precision is key in baking!
- Rubber spatula: Perfect for scraping down the sides of the bowl.
- 9×13 inch baking pan: This will be used to bake your cookie bars.
- Parchment paper: Lining the pan makes it easy to remove the bars after baking.
- Whisk: To mix your wet ingredients smoothly.
How to Prepare Peanut Butter Chocolate Cookie Bars

Now that we have our ingredients and tools ready, it’s time to make these delicious bars! Follow these straightforward steps:
Step 1: Preheat the Oven
Begin by preheating your oven to 350°F (175°C). This ensures that your cookie bars bake evenly.
Step 2: Prepare Your Baking Pan
Line your 9×13 inch baking pan with parchment paper, leaving some overhang on the sides. This will make it easier to lift out the bars later.
Step 3: Mix the Wet Ingredients
In a large mixing bowl, combine the peanut butter, sugar, eggs, sweetened condensed milk, melted chocolate, and vanilla extract. Use a whisk to mix until everything is well combined and smooth.
Step 4: Incorporate the Dry Ingredients
Once your wet ingredients are mixed, fold in the coarsely chopped peanuts using a rubber spatula. Make sure they are evenly distributed throughout the batter.
Step 5: Pour into the Baking Pan
Pour the batter into the prepared baking pan, spreading it out evenly with the spatula.
Step 6: Bake
Bake in the preheated oven for 25-30 minutes, or until the edges are golden brown and a toothpick inserted into the center comes out with a few moist crumbs.
Step 7: Cool and Slice
Once baked, remove the pan from the oven and allow the bars to cool in the pan for about 10 minutes. Then, use the parchment overhang to lift the bars out of the pan and onto a wire rack to cool completely before slicing into squares.
Make It Diet-Friendly

If you’re looking to adjust this recipe to fit certain dietary needs, here are a few suggestions:
- Nut-free: Use sunflower seed butter instead of peanut butter for a nut-free alternative.
- Lower sugar: Substitute half of the sugar with a natural sweetener like stevia or erythritol.
- Gluten-free: Ensure that the baking chocolate and other ingredients are certified gluten-free.
- Dairy-free: Choose a dairy-free sweetened condensed milk alternative.
Chef’s Notes
These Peanut Butter Chocolate Cookie Bars are best enjoyed fresh but can also be stored for later. Here are some tips:
- For an extra chocolatey twist, drizzle some melted chocolate over the top after slicing.
- Feel free to add chocolate chips or chunks to the batter for added texture and flavor.
- If you prefer a more intense peanut flavor, use crunchy peanut butter instead of creamy.
- These bars can be frozen for up to three months; just make sure to wrap them well to prevent freezer burn.
How to Store & Reheat
To keep your Peanut Butter Chocolate Cookie Bars fresh:
- Store them in an airtight container at room temperature for up to a week.
- If storing in the fridge, they can last up to two weeks, but allow them to come to room temperature before serving for the best texture.
- For reheating, simply microwave a bar for about 10-15 seconds to enjoy that fresh-baked flavor.
Reader Q&A
Can I use natural peanut butter for this recipe?
Yes, you can use natural peanut butter, but keep in mind that it can have a different consistency and may result in slightly denser bars. Make sure to stir it well before measuring.
What can I substitute for the sweetened condensed milk?
You can use coconut milk mixed with a sweetener, or make your own by simmering milk and sugar until thickened.
How do I know when the bars are done baking?
The bars are done when the edges are golden brown and a toothpick inserted into the center comes out with a few moist crumbs, not wet batter.
Can I add chocolate chips to the batter?
Absolutely! Adding chocolate chips or chunks will enhance the chocolate flavor and make these bars even more indulgent.
You Might Also Like
- Gooey Chocolate Peanut Butter Bars – Another delicious way to enjoy the classic flavor combination.
- Chocolate Chip Cookies – A timeless classic that never goes out of style.
- Chocolate Fudge Cookie Sandwiches – For those who love a little extra chocolate in their life!
See You at the Table
Making these Peanut Butter Chocolate Cookie Bars is sure to be a hit with anyone who tries them. Their chewy texture and rich flavors make them a delightful treat for any occasion. Whether you’re sharing them with friends or savoring them solo, these bars are guaranteed to bring a smile to your face. So gather your ingredients, preheat that oven, and enjoy the simple pleasure of baking these mouthwatering bars. Happy baking!

Peanut Butter Chocolate Cookie Bars
Ingredients
- 1 cup peanut butter
- 1 cup sugar
- 2 count eggs
- 1 can (14 ounces) sweetened condensed milk
- 2 ounces unsweetened baking chocolate melted and cooled
- 1 teaspoon vanilla extract
- ½ cup coarsely chopped peanuts
Instructions
- Preheat your oven to 350°F (175°C).
- Line your 9x13 inch baking pan with parchment paper, leaving some overhang on the sides.
- In a large mixing bowl, combine the peanut butter, sugar, eggs, sweetened condensed milk, melted chocolate, and vanilla extract. Whisk until smooth.
- Fold in the coarsely chopped peanuts using a rubber spatula until evenly distributed.
- Pour the batter into the prepared baking pan, spreading it out evenly.
- Bake for 25-30 minutes, or until the edges are golden brown and a toothpick comes out with moist crumbs.
- Cool in the pan for about 10 minutes, then lift out using the parchment and cool completely on a wire rack before slicing.
Equipment
- Mixing bowls
- Measuring cups and spoons
- Rubber spatula
- 9x13 inch Baking Pan
- Parchment Paper
- Whisk
Notes
- For an extra chocolatey twist, drizzle some melted chocolate over the top after slicing.
- Add chocolate chips or chunks to the batter for added texture and flavor.
- Use crunchy peanut butter for a more intense peanut flavor.
- These bars can be frozen for up to three months; wrap them well to prevent freezer burn.
