Peanut Butter Lunch Lady Bars
Soft, chewy Peanut Butter Lunch Lady Cookie Bars with creamy frosting. A nostalgic, crowd-pleasing dessert ready in under an hour.
Ingredients
For the Bars:
- 2 cups all-purpose flour
- 2 cups granulated sugar
- 1 teaspoon baking soda
- 1 teaspoon salt
- 1/2 cup whole milk
- 1 teaspoon vanilla extract
- 2 large eggs beaten
- 1 cup 2 sticks unsalted butter
- 1 cup creamy peanut butter
For the Frosting:
- 1/2 cup 1 stick unsalted butter
- 1/2 cup creamy peanut butter
- 2 tablespoons milk
- 4 cups powdered sugar
Instructions
Preheat the Oven:
- Set your oven to 400°F (200°C). Grease a large sheet pan (about 13×18 inches) or line it with parchment paper.
Mix the Dry Ingredients:
- In a large mixing bowl, whisk together flour, sugar, baking soda, and salt. Set aside.
Whisk the Wet Ingredients:
- In a separate bowl, combine milk, vanilla extract, and beaten eggs.
Create the Peanut Butter Base:
- In a medium saucepan over medium heat, melt butter with peanut butter until smooth and just beginning to bubble. Remove from heat immediately.
Combine Everything:
- Gradually stir the dry ingredients into the melted peanut butter mixture. Then add the milk/egg mixture and stir until smooth and fully combined.
Bake the Bars:
- Spread batter evenly into the prepared pan. Bake for 20 minutes or until a toothpick inserted in the center comes out clean. Let cool completely before frosting.
Make the Frosting:
- In a small saucepan, melt butter with peanut butter over medium heat. Bring just to a gentle boil, then remove from heat. Stir in milk, then gradually whisk in powdered sugar until smooth and spreadable.
Frost the Bars:
- Pour warm frosting over the cooled bars and spread evenly. Let cool at room temperature until the frosting sets.