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Lunch Lady Peanut Butter Bars

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Updated May 24, 2022
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If you were ever an elementary school student in Utah, you’ll know these bars well. If not, you’ll still love these sweet, creamy, chocolaty, makes-the-whole-day bars just as much, even if a lunch lady never plunked one on your cafeteria tray way back when.

More About This Recipe

  • There were three hot lunches you waited for when you grew up in Utah. The first was grilled cheese. Giant slabs of toasted bread, cheese baked into the center. Sliced into triangles with a pizza cutter and served with a side of sweet and creamy tomato soup. It was the stuff of elementary school dreams. The second, “dirty diapers.” To this day, I literally do not know the real name of this meal. But it was tiny bundles of pie crust, wrapped around gravy beef. The boys always teased you when you took a bite: “dirty diapers, dirty diapers.” But you kind of didn’t care, because those things were delicious. But the pièce de résistance of school lunch was the peanut butter bar. Soft peanut butter and oatmeal cookie on the bottom, chocolate frosting on the top. When the school lunch calendar was printed off each month, you’d stand over that green sheet of mimeographed paper, sounding out words until you found the ones that read “peeeanut butterrrr barssss.” And then, you’d circle it with your sparkly Lisa Frank pencil, hang it on your wall next to your Donny and Marie poster, and count down the minutes until the lunch ladies served up Peanut Butter bars on Wednesday. Or Friday. Or whatever glorious day was circled on the calendar. Since you already know how to make grilled cheese, and you likely don’t desire “dirty diapers” for dinner, I figured peanut butter bars were the finest taste of childhood to share with the world. So turned that tasty treat from childhood into an easy dessert bar, using ready-to-go Betty Crocker peanut butter cookie mix as the base. Tastes just like the original. This recipe takes me right back to all of it. With blessedly smaller bangs, and far less Aqua Net than I used back then. So maybe this version is even better.

Lunch Lady Peanut Butter Bars

  • Prep Time 10 min
  • Total 1 hr 30 min
  • Servings 15
  • Ingredients 10
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Ingredients

  • 1 pouch (17.5 oz) Betty Crocker™ Peanut Butter Cookie Mix
  • 1/2 cup + 2 tablespoons butter, softened
  • 1 egg
  • 1/3 cup old fashioned oats
  • 2 tablespoons water
  • 1/2 cup peanut butter
  • 2 cups powdered sugar
  • 2 tablespoons cocoa powder
  • 1 tablespoon vanilla
  • 2-3 tablespoons milk

Instructions

  • Step 
    1
    Preheat oven to 350°F. In a large bowl or stand mixer, mix together cookie mix, 1/4 cup butter, egg, oats and water. Press into a nonstick or parchment-lined 9x9-inch baking pan.
  • Step 
    2
    Bake 20-22 minutes, or just until the center sets.
  • Step 
    3
    Whip together peanut butter and 2 tablespoons butter. Gently spread mixture across top of hot peanut butter bars. Let bars cool completely.
  • Step 
    4
    In a large bowl or stand mixer, beat together 1/4 cup butter, powdered sugar, cocoa powder, vanilla and just enough milk to make spreadable frosting. Frost cooled bars, cut into squares and serve.

Nutrition

350 Calories
17g Total Fat
5g Protein
44g Total Carbohydrate
31g Sugars

Nutrition Facts

Serving Size: 1 Serving
Calories
350
Calories from Fat
150
Total Fat
17g
26%
Saturated Fat
7g
36%
Trans Fat
0g
Cholesterol
35mg
11%
Sodium
280mg
12%
Potassium
105mg
3%
Total Carbohydrate
44g
15%
Dietary Fiber
1g
6%
Sugars
31g
Protein
5g
% Daily Value*:
Vitamin A
6%
6%
Vitamin C
0%
0%
Calcium
0%
0%
Iron
4%
4%
Exchanges:
2 Starch; 0 Fruit; 1 Other Carbohydrate; 0 Skim Milk; 0 Low-Fat Milk; 0 Milk; 0 Vegetable; 0 Very Lean Meat; 0 Lean Meat; 0 High-Fat Meat; 3 Fat;
Carbohydrate Choice
3
*Percent Daily Values are based on a 2,000 calorie diet.

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