Peanut Butter Lunch Lady Bars
Sheet pan cookies are a true game-changer, especially when you need an easy dessert that feeds a crowd. These Peanut Butter Lunch Lady Bars are inspired by those classic school cafeteria treats — but trust me, they’re far richer, softer, and more indulgent than anything you remember from lunch line days.
Thick, chewy peanut butter cookie bars topped with a smooth, melt-in-your-mouth peanut butter frosting make this recipe pure comfort baking. Simple ingredients, no fancy steps, and guaranteed smiles with every bite.
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- Why You’ll Love This Recipe
- What You’ll Need to Make This Recipe
- How to Make This Recipe
- Tips & Variations
- Recipe Card
Why You’ll Love This Recipe
- Perfect for feeding a crowd with one pan.
- Soft, chewy texture with rich peanut butter flavor.
- No scooping individual cookies.
- Classic, nostalgic dessert that everyone loves.
- Freezer-friendly and great for make-ahead baking.
What You’ll Need to Make This Recipe
Exact measurements are listed in the recipe card at the end.
- All-purpose flour
- Granulated sugar
- Eggs
- Creamy peanut butter
- Unsalted butter
- Milk
- Baking soda
- Vanilla extract
- Salt
- Powdered sugar (for frosting)
How to Make This Recipe
Full instructions are included in the recipe card below.
- Preheat the oven and prepare your baking sheet.
- Mix the dry ingredients in one bowl.
- Combine the wet ingredients separately.
- Melt butter and peanut butter, then mix everything together.
- Bake until set and allow to cool completely.
- Prepare the peanut butter frosting and spread it over the bars.
Tips & Variations
- Chocolate twist: Swap the peanut butter frosting for chocolate frosting.
- Extra crunch: Add chopped peanuts or chocolate chips to the batter.
- Clean cuts: Let the bars cool fully before slicing.
- Storage: Store covered at room temperature or refrigerate for firmer bars.
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