Description
These rich and chewy Peanut Butter Lunch Lady Cookie Bars are a nostalgic favorite with creamy peanut butter in the batter and frosting. Easy to make, freezer-friendly, and always a crowd-pleaser.
Ingredients
Scale
- 2 cups all-purpose flour
- 2 cups granulated sugar
- 2 eggs
- 1½ cups creamy peanut butter (divided)
- 1½ cups unsalted butter
- ½ cup milk (plus more as needed for frosting)
- 1 tsp baking soda
- 1 tsp vanilla extract
- 1 tsp salt
- 4 cups powdered sugar
Instructions
- Preheat oven to 350°F (175°C). Grease or line a 9x13-inch pan.
- Melt butter and 1 cup peanut butter in a saucepan. Let cool slightly.
- In a bowl, whisk flour, sugar, baking soda, and salt.
- Add eggs, milk, and vanilla; mix well.
- Stir in peanut butter mixture until smooth. Pour into pan and smooth top.
- Bake 25–30 minutes, until a toothpick comes out clean.
- While bars cool slightly, whisk frosting: ½ cup peanut butter, powdered sugar, and milk to desired consistency.
- Spread frosting over warm bars. Cool completely before slicing.
Notes
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Use creamy peanut butter (not natural) for best results.
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Add-ins like chocolate chips or chopped peanuts are delicious extras.
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Bars can be frozen up to 2 months.
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Substitute with almond or sunflower butter for nut-free versions.
- Prep Time: 15 minutes
- Cook Time: 30 minutes
Nutrition
- Calories: 410