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+ servings
Peanut butter bars with chocolate frosting on a milky green cake plate.
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4.89 from 9 votes

Lunch Lady Chocolate Peanut Butter Bars

Lunch lady peanut butter bars are a blast from the past. If you enjoyed these in your childhood, you'll love this recipe.
Prep Time15 minutes
Cook Time25 minutes
Total Time40 minutes
Course: Desserts and Sweets
Cuisine: American
Servings: 36 bars

Ingredients

  • 2 sticks unsalted butter softened
  • ¾ cup light brown sugar
  • 2 cups sugar
  • 4 eggs
  • 1 ½ cups creamy peanut butter
  • 1 teaspoon pure vanilla extract
  • 2 ¾ cups flour
  • teaspoon salt
  • 1 tablespoon baking powder

Chocolate glaze:

  • 2 cups sifted powdered sugar
  • ½ cup cocoa powder
  • 2 tablespoons butter softened
  • 1 teaspoon pure vanilla extract
  • 4 tablespoons milk

Instructions

  • Preheat oven to 350 degrees F.
  • In the bowl of a stand mixer, cream butter and sugars until fluffy. Add eggs, one at a time, beating well after each addition. Add peanut butter and vanilla and mix until incorporated.
  • In a separate bowl, combine flour, salt, and baking powder. Add all at once to peanut butter mixture and mix well. Using a rubber spatula, pat mixture onto a 17.25 x 11.5-inch rimmed baking sheet.
  • Bake for 25 to 30 minutes or until the top is set and a toothpick inserted comes out clean.
  • Make the glaze while bars bake: In a stand mixer combine powdered sugar, cocoa powder, and butter. Mix until moistened. Add vanilla, then mix. Add milk, 1 tablespoon at a time, until spreading consistency.
  • Glaze while warm with chocolate glaze.

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