Lunch Lady Peanut Butter Bars
Lunch Lady Peanut Butter Bars
You have the lunch lady to thank for these old school cafeteria-style Peanut Butter Cookie Bars that have a chewy peanut butter oatmeal cookie base and a thin layer of salty-sweet melted peanut butter underneath those rich swirls of chocolate frosting.



  • 1 cup salted butter, softened (227g)
  • 1 cup granulated sugar (200g)
  • 1 cup packed light brown sugar (200g)
  • 2 ½ cups creamy peanut butter, divided
  • 2 large eggs
  • 2 teaspoons vanilla extract
  • 2 cups all-purpose flour, scooped & leveled (282g)
  • 2 cups old-fashioned oats
  • 1 teaspoon baking soda
  • 1 teaspoon salt


  • ½ cup salted butter, softened (227g)
  • 3 cups powdered sugar
  • 4 Tablespoons cocoa powder
  • ¼ cup milk
  • 2 teaspoons vanilla extract


  1. Preheat oven to 350°F. Spray a half-sheet baking sheet (13"x18") with baking spray.
  2. Beat the butter, granulated sugar, brown sugar, and 1 cup of the peanut butter in a mixer until creamy and light. Add eggs and vanilla extract, then beat again, scraping the bottom and sides of the bowl.
  3. Add the flour, oats, baking soda, and salt. Mix just until combined. Spread the peanut butter oatmeal cookie dough into the prepared pan with a spatula. Bake for 15-17 minutes until golden brown around the edges and barely set in the middle. Do not overbake.
  4. While the peanut butter oatmeal cookie base is still hot, melt the remaining 1 ½ cups of peanut butter in the microwave in a microwave safe bowl for 1 minute, then drizzle over the top of the bars, spreading it into an even layer with a spatula or knife. Let cool completely until the peanut butter has firmed up. This can be sped up by sticking the bars in the fridge.
  5. Make the chocolate frosting by beating the butter, powdered sugar, cocoa powder, milk, and vanilla extract in a large bowl until smooth. Spread in an even layer over the cooled bars, then cut into squares.

What's your reaction?


0 comment

Write the first comment for this!

Facebook Conversations