When it comes to delicious, home-baked treats, few things can rival the allure of peanut butter cookie bars. These delightful treats combine the rich, nutty flavor of peanut butter with the sweet comfort of cookie dough, creating a snack that’s perfect for any occasion. Whether you’re hosting a gathering, preparing a lunchbox surprise, or simply craving something sweet, these cookie bars will quickly become a favorite in your household.
Why We Love This Peanut Butter Cookie Bars Recipe
There are countless reasons why peanut butter cookie bars deserve a spot in your dessert repertoire. To start, they are straightforward to prepare, making them ideal for both novice bakers and seasoned pros. The ingredients are commonly found in most pantries, meaning you won’t have to rush out to the store for just a single item, which is a huge plus!
Not only are these bars quick to whip up, but they also offer versatility. You can easily incorporate your favorite mix-ins, from chocolate chips to nuts, allowing you to customize each batch to suit your tastes. Plus, they boast an appealing combination of textures ranging from chewy to slightly crisp edges, ensuring there’s something for everyone in every bite.
Lastly, these delectable bars are perfect for sharing and are a surefire hit at parties, potlucks, or even just a casual family evening. A platter of freshly baked peanut butter cookie bars can elevate any gathering. With their inviting aroma and mouthwatering taste, you’re bound to witness smiles around the table!
Ingredients about Peanut Butter Cookie Bars
To create your batch of peanut butter cookie bars, gather the following ingredients:
- 1/2 cup salted butter, softened
- 1 cup creamy peanut butter
- 1/2 cup granulated sugar
- 1/2 cup light brown sugar, packed
- 1 tablespoon whole milk
- 1 teaspoon pure vanilla extract
- 1 egg
- 1 cup all-purpose flour
- 1/2 teaspoon baking soda
- 1/4 teaspoon fine sea salt
- 1/4 teaspoon baking powder
- 1/4 teaspoon cinnamon (optional)
- 1 cup peanut butter chips (optional)
These ingredients come together beautifully to create a sweet treat that’s sure to delight. You’ll be amazed at how simple it is to blend these staple items into something so special!
How to Make Peanut Butter Cookie Bars Directions
Let’s get started on making your peanut butter cookie bars! Follow these straightforward steps to bake your way to a delicious treat.
- Preheat Your Oven: Start by preheating your oven to 350 degrees F. This ensures that your cookie bars bake evenly and come out perfectly.
- Prepare Your Baking Pan: Take a 9×9-inch baking pan and line it with parchment paper. This step will make removing your cookie bars much easier once they are baked.
- Combine Dry Ingredients: In a medium-sized bowl, mix together the all-purpose flour, baking soda, fine sea salt, baking powder, and cinnamon (if you’re using it). Set this bowl aside for later.
- Cream the Butter and Peanut Butter: In a standing mixer or a large bowl with a hand-held mixer, cream together the softened salted butter and creamy peanut butter until you achieve a smooth, well-mixed texture.
- Add Sugars and Wet Ingredients: Next, add in the granulated sugar and light brown sugar. Beat this mixture until everything is nicely combined. Then, incorporate the egg, pure vanilla extract, and whole milk. Mix on medium-high speed for about 30 to 60 seconds, or until the mixture turns lighter in color, indicating the sugars have dissolved.
- Add Dry Ingredients: Gradually add your previously mixed dry ingredients to the wet mixture. Mix on low speed until everything is just combined. Be careful not to over-mix, as you want your bars to remain tender and chewy.
- Add Extras if Desired: If you choose to include peanut butter chips or any mix-ins, now’s the time to fold them into the dough gently.
- Press the Dough: Use your hands to press the dough evenly into the prepared baking dish. Make sure the mixture is evenly distributed so that all pieces bake uniformly.
- Baking Time: Place the baking dish in the preheated oven and bake for approximately 22 to 25 minutes. You’ll know they are ready when the top is lightly browned and a toothpick inserted into the center comes out clean.
- Cool Your Bars: Once baked, remove your dish from the oven and allow the cookie bars to cool on a wire rack. Once they are completely cool, cut them into squares and serve.
The baking process might seem lengthy, but each step takes just a bit of time and effort. You’ll be rewarded with delicious bars that are just bursting with flavor!
How to Serve Peanut Butter Cookie Bars
Once your peanut butter cookie bars are baked and cooled, it’s time to serve them up! You can present them in an enticing manner that showcases their deliciousness. Here are a few ideas on how to serve these delightful bars:
- Platter Presentation: Arrange the squares on a decorative platter or cake stand. This adds a touch of elegance and makes them appealing as a centerpiece for gatherings.
- Pair with Milk or Coffee: Nothing beats the classic pairing of peanut butter cookie bars with a glass of cold milk or a warm cup of coffee. Your guests will love this delightful combo!
- Add a Topping: If you desire, drizzle some melted chocolate or a sprinkle of powdered sugar over the top of the bars just before serving. This can provide that extra flair and sweetness that many will appreciate!
- Create a Snack Pack: Consider wrapping individual bars in parchment paper for a quick grab-and-go snack option. This works well for school lunches or road trips.
- Ice Cream Sandwich: For a decadent treat, use two cookie bars to create an ice cream sandwich. Scoop your favorite flavor of ice cream in between two bars for a delightful dessert!
Serving these cookie bars can be as creative and fun as you want it to be. The only hard part is deciding how quickly to devour them!
Expert Tips: Peanut Butter Cookie Bars
To ensure your peanut butter cookie bars turn out perfectly every time, consider these expert tips:
- Room Temperature Ingredients: Make sure your butter and egg are at room temperature. This allows for a smoother mixture and better overall texture.
- Don’t Overmix: Once you add the dry ingredients to the wet ones, mix just until combined. Overmixing can lead to tough cookie bars.
- Use Quality Peanut Butter: For the best flavor, opt for a creamy, high-quality peanut butter without added sugars or oils. This ensures your cookie bars taste rich and delectable.
- Watch the Oven Time: Ovens can vary, so keep an eye on your bars as they near the end of the baking time. If you slightly underbake them, they will continue to firm up as they cool, providing that soft-chewy texture everyone loves.
- Customize Mix-Ins: Feel free to get creative with mix-ins! Consider adding chocolate chips, chopped nuts, or even shredded coconut to tailor the flavors to your liking.
These tips can help you navigate through the baking process with confidence and achieve a delightful outcome every time.
How to Store Peanut Butter Cookie Bars
Proper storage is essential to maintain the freshness and flavor of your peanut butter cookie bars. Here’s how to keep them in prime condition:
- Cool Completely: Make sure the cookie bars have cooled completely before storing them. This prevents condensation and keeps them from becoming soggy.
- Use an Airtight Container: Store the bars in an airtight container at room temperature. This will preserve the chewy texture and rich flavor for several days.
- Refrigeration Option: If you want to keep them for a longer time, consider refrigerating the bars. They can last up to a week this way, although they may lose some of that fresh-baked softness.
- Freezing for Later: For even longer storage, freeze the bars. Wrap them individually in plastic wrap and then place them in a freezer-safe bag. When you’re ready to enjoy them, simply thaw at room temperature or pop them in the microwave for a few seconds.
Storing your peanut butter cookie bars correctly will ensure you can relish in the homemade goodness for days to come.
Variation of Peanut Butter Cookie Bars
One of the best aspects of cooking is flexibility! Here are a few variations that you might want to try for your peanut butter cookie bars:
- Nutty Delight: Add chopped peanuts or other nuts like almonds or walnuts for added crunch.
- Chocolate Lovers: Mix in half a cup of chocolate chips along with peanut butter chips for a delightful combination that satisfies those chocolate cravings.
- Oatmeal Twist: Incorporate rolled oats into the dough for a chewy, heartier texture. You can substitute about 1/2 cup of flour with oats.
- Nut Butter Swirl: Try using almond or cashew butter in place of peanut butter for a different flavor profile. You can even create swirls by layering different nut butters in the pan.
- Spiced Peanut Butter Bars: Add additional spices like nutmeg or ginger to the batter alongside the cinnamon to create a unique flavor.
These variations give you plenty of room to experiment and customize the recipe to fit your preferences or seasonal ingredients.
FAQs About Peanut Butter Cookie Bars
What is the best way to cut peanut butter cookie bars? To get neat, even squares, use a sharp knife and make a clean cut without dragging. For best results, run the knife under hot water and wipe it dry before cutting.
How do I know when my peanut butter cookie bars are done? Keep an eye on the top. They should be lightly browned, and a toothpick inserted into the center should come out clean or with a few moist crumbs.
Can I use crunchy peanut butter instead of creamy? Absolutely! Using crunchy peanut butter will give your bars an enjoyable texture and nutty bites throughout.
Can I make these bars gluten-free? Yes, swap out the all-purpose flour with a gluten-free flour blend. Make sure to check the blend’s compatibility for baking.
How long do these bars last? When stored properly at room temperature, peanut butter cookie bars can last up to five days. If refrigerated, they can last up to a week, and you can freeze them for longer storage.

Peanut Butter Cookie Bars
Ingredients
Base Ingredients
- 1/2 cup salted butter, softened Make sure it’s at room temperature.
- 1 cup creamy peanut butter Opt for high-quality peanut butter.
- 1/2 cup granulated sugar
- 1/2 cup light brown sugar, packed
- 1 tablespoon whole milk
- 1 teaspoon pure vanilla extract
- 1 each egg Use at room temperature.
- 1 cup all-purpose flour
- 1/2 teaspoon baking soda
- 1/4 teaspoon fine sea salt
- 1/4 teaspoon baking powder
- 1/4 teaspoon cinnamon (optional) For extra flavor.
- 1 cup peanut butter chips (optional) Can be included for extra peanut butter flavor.
Instructions
Preparation
- Preheat your oven to 350 degrees F.
- Line a 9x9-inch baking pan with parchment paper.
- In a medium-sized bowl, mix together flour, baking soda, salt, baking powder, and cinnamon (if using). Set aside.
Mixing
- In a large bowl, cream together softened butter and peanut butter until smooth.
- Add granulated sugar and brown sugar; beat until combined.
- Mix in the egg, vanilla extract, and milk until lighter in color.
- Gradually add the dry ingredients to the wet mixture; mix until just combined.
- Fold in peanut butter chips or any desired mix-ins.
Baking
- Press the dough evenly into the prepared baking pan.
- Bake for 22 to 25 minutes until lightly browned and a toothpick comes out clean.
- Allow the bars to cool on a wire rack before cutting into squares.
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