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Peanut Butter Bars

Get the recipe for the easy and delicious peanut butter bars, just like the ones your elementary school made when you were a kid!

When my husband and I were first married, he would tell me wistfully about these dreamy peanut butter bars his elementary school cafeteria used to serve. He was always really sad that he didn’t have a recipe for them, and it never occurred to me to look online because A) this was a while ago, and B) my elementary school never served them, so I didn’t know they were a pretty common treat. A couple of years later, I put together a cookbook for my husband’s family and included all of their favorite recipes. I asked his parents and all of his siblings to submit recipes and added a few of my family favorites too. And not one but two of my husband’s siblings sent me a recipe for the much-sought-after elementary school peanut butter bars. I guess my husband hadn’t ever thought to ask anyone in his family if they remembered them or knew how to make them! We still laugh about that.

In the years since I put that cookbook together—and since we got our hands on the elusive recipe—I’ve made these delicious peanut butter bars often, and they’ve become a favorite of a new generation of kids. I posted a picture of these yummy cookies on Instagram and was floored by the response. So many people have fond memories of eating them at school when they were little. I hope my kids grow up loving them just as much as their dad—and so many of you—did!

Get the recipe for the easy and delicious peanut butter bars, just like the ones your elementary school made when you were a kid!

Peanut Butter Bars
 
Prep time
Cook time
Total time
 
These chocolate-topped peanut butter bars will make you feel like a kid again!
Author:
Recipe type: dessert
Serves: 4 dozen cookies
Ingredients
for the bars
  • 1 cup granulated sugar
  • 1 cup brown sugar
  • 1 cup (2 sticks) butter
  • 1 cup creamy peanut butter
  • 2 eggs
  • 1 teaspoon vanilla
  • 2 cups flour
  • 2 teaspoons baking soda
  • 1 teaspoon salt
  • 2 cups oats
for the topping
  • 1 cup creamy peanut butter
  • ½ cup (1 stick) butter
  • ¼ cup cocoa powder
  • ¼ cup milk
  • ⅛ teaspoon salt
  • 1 teaspoon vanilla
  • 3 cups powdered sugar
  • 1 Tablespoon hot water
Instructions
  1. Preheat the oven to 325°F and lightly spray a 12x18" rimmed baking sheet with nonstick cooking spray.
  2. In a large bowl or in the bowl of a stand mixer, beat the granulated sugar, brown sugar, and butter on medium speed until light and fluffy, about 1 minute. Add the peanut butter and beat until smooth. Add the eggs and vanilla, and again, beat until smooth.
  3. In a medium bowl, combine flour, baking soda, and salt. Add the dry ingredients to the mixing bowl and mix on low just until combined. Add the oats and mix again until just combined.
  4. Pat the dough into the prepared pan. The dough will be really sticky. A few techniques I've tried with varying levels of success are patting the dough in with hands sprayed with nonstick cooking spray, patting the dough in with a spatula sprayed with nonstick cooking spray, and patting the dough in with hands that are slightly wet with water. They all work about the same!
  5. Bake the cookies for 20 minutes, then remove from the oven and set aside to cool for a few minutes.
  6. While the cookies are still quite warm, spread the remaining cup of peanut butter over the top of the cookies. Allow the entire thing to cool and set up before proceeding.
  7. When the cookies are completely cool, make the chocolate frosting. Combine butter, cocoa powder, and milk in a medium saucepan, and heat over medium until the butter is completely melted. Remove from heat, and whisk in the salt and the vanilla. Add the powdered sugar and whisk until smooth. Whisk in 1 Tablespoon of hot water, and immediately pour the chocolate frosting over the cooled cookie bars. Spread it evenly over the tops of the bars, getting as close to the edges as you can. Allow the bars to cool and set up completely before cutting.
  8. Cut the pan of cookies into 48 bars, 8 bars one way and 6 the other. Enjoy with a big glass of milk!

Get the recipe for the easy and delicious peanut butter bars, just like the ones your elementary school made when you were a kid!

Get the recipe for the easy and delicious peanut butter bars, just like the ones your elementary school made when you were a kid!

6 thoughts on “Peanut Butter Bars

    1. Hi Heather! We have never tried freezing them, so I don’t know how they’d turn out. It’s worth a shot, I say! xo

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