Peanut Butter Oat Bars
These peanut butter oat crumble bars have a buttery oat crust, a soft melty peanut butter center, and a golden crumble topping. They’re easy to make, perfectly chewy, and always disappear fast at baseball games, bake sales, and family gatherings.
Why You’ll Love These Peanut Butter Bars
- Thick bakery-style peanut butter layer
- Soft, chewy, and buttery texture
- Made with simple pantry ingredients
- Easy 9×13 recipe for feeding a crowd
- Perfect for potlucks, sports snacks, and lunchboxes
- No mixer needed
Peanut Butter Oat Bars
Chewy peanut butter oat crumble bars with a buttery oat crust and soft peanut butter filling. This easy 9×13 dessert is perfect for parties bake sales, or after-school treats.
Ingredients
Method
- Preheat oven to 350℉. Grease a 9×13 or line with parchment
- In a large bowl, stir together flour, oats, salt, and baking soda. Set aside
- In a sauce pan, melt butter. Let cool for a few minutes
- Add brown sugar + vanilla to melted butter and mix
- Stir in flour mixture to butter and brown sugar and mix until crumbly
- Set aside 2 cups of crumble and press the remaining mixture into the pan
- Bake crust for 10 minutes
- White crust bakes, slowly melt peanut butter and brown sugar. Remove from heat and add vanilla
- Spread mixture over warm crust
- Sprinkle remaining oat mixture evenly over peanut butter
- Bake for 18-22 more minutes until lightly golden
- Cool before slicing for cleaner bars, or serve slightly warm for a melty peanut butter center
Ingredients
See recipe card below for full ingredient list.
Tips for Best Peanut Butter Cookies
- Bake just until lightly golden for soft chewy bars
- Let bars cool before slicing for cleaner cuts
- Use creamy peanut butter for the smoothest filling
- Chill briefly before cutting if you want neater squares
Save This Recipe for Later
Pin this recipe so you always have it when you need a quick, crowd-pleasing dessert.
