No Bake Peanut Butter Bars

These no bake peanut butter bars are an easy no bake dessert made with creamy peanut butter, graham cracker crumbs, and a smooth chocolate topping. These bars come together in one bowl with no mixer. And the perfect make-ahead dessert for parties, holidays, or when you need an easy homemade treat fast. Just 7 ingredients is all you need!

 

I’ve always loved easy cookie bars and dessert bars because they feel low effort but still completely homemade. Between my chocolate chip cookie bars, oatmeal cookie bars, and Congo bars, bar desserts are usually my go-to when I want something easy that still gets rave reviews.

I wanted these peanut butter bars to feel extra nostalgic and simple to make. They’re similar to my no bake peanut butter pretzel bars. These no bake peanut butter bars, aka lunch lady peanut butter bars are exactly the kind of dessert I can throw together during nap time or when I need something homemade without completely wrecking my kitchen.

I tested these bars a few different ways and found that combining the butter and regular creamy peanut butter together gives the best soft texture that’s sturdy enough to slice but still melts in your mouth. I also like adding a little coconut oil to the chocolate topping because it helps create that smooth lunch lady style chocolate layer that slices cleanly without cracking.

Ingredients

For the peanut butter bars

• Salted butter: Can also use unsalted butter. Just add a pinch of salt.
• Creamy peanut butter: Use regular peanut butter like Jif or Skippy, not natural style which can be too oily.
• Graham cracker crumbs: If you can find graham crackers, try using digestive biscuits or Nilla wafers.
• Powdered sugar: Use my homemade powdered sugar recipe.
• Vanilla extract

For the topping

• Chocolate chips: semi-sweet gives a richer flavor while milk chocolate tastes more classic
• Coconut oil: Can also use shortening.

How To Make No Bake Peanut Butter Bars

Line an 8×8-inch or 9×9-inch square baking pan with parchment paper. Leaving some overhang on the sides makes it much easier to lift the bars out and slice later.

In a medium microwave-safe bowl, combine the butter and peanut butter. Heat until the butter is melted, then stir together until completely smooth. Melting these together first helps the peanut butter mixture combine evenly and keeps the bars soft instead of dry or crumbly.

Stir in the vanilla extract, graham cracker crumbs, and powdered sugar until fully combined. The mixture will be thick, similar to cookie dough. I like using a wooden spoon or sturdy spatula here because the mixture gets thick quickly.

Transfer the peanut butter mixture to the prepared pan and press into an even layer. Clean hands actually work best for this step because they help press the mixture smoothly into the corners without sticking too much.

In a separate bowl, melt together the chocolate chips and coconut oil. You can microwave in 30-second intervals, stirring between each interval, or melt gently on the stovetop over low heat. Heating slowly helps prevent the chocolate from seizing or becoming grainy.

Pour the melted chocolate over the peanut butter layer and spread evenly with an offset spatula or spoon.

Chill the bars in the refrigerator for at least 2 hours or until fully firm. This chilling step is important because it allows the peanut butter layer to set properly and makes slicing much cleaner.

Before cutting, let the bars sit at room temperature for about 10 minutes. This helps soften the chocolate layer slightly so it slices more neatly without cracking.

Storage

Store the peanut butter bars in an airtight container in the refrigerator for up to 1 week. I actually think they taste even better chilled.

To freeze baked bars, place sliced bars in a freezer-safe container with parchment paper between layers to prevent sticking. Freeze for up to 3 months.

To serve from frozen, allow the bars to thaw overnight in the refrigerator or sit at room temperature for about 20 to 30 minutes before serving.

More Easy Bars & Nostalgic Desserts To Try

If you love easy nostalgic desserts like these Lunch Lady Peanut Butter Bars, here are a few more homemade treats to try next:

• Star Crunch – A homemade version of the classic nostalgic treat with chewy chocolate caramel flavor and crispy rice cereal.
• Cosmic Brownies – Rich fudgy brownies topped with chocolate frosting and rainbow candy pieces just like the childhood favorite.
• Magic Bars – The easiest layered dessert bar made with chocolate chips, coconut, graham crackers, and sweetened condensed milk.