Peanut butter blondies are made with chunks of peanut butter Oreos inside the batter and topped with peanut butter swirls.

Craving a dessert that’s chewy, rich, and bursting with peanut butter goodness? These Peanut Butter Blondies are just what you need! Packed with chunks of peanut butter Oreos and topped with creamy peanut butter swirls, they’re an indulgent treat that’s easy to make and impossible to resist.

Why You’ll Love This Recipe

Easy to Make – With just a handful of pantry staples, this blondie recipe comes together in no time.
Perfectly Chewy Texture – These peanut butter blondies are soft in the center with a slightly crisp edge, making every bite irresistible.
Loaded with Peanut Butter Flavor – The peanut butter Oreos add a delicious crunch, while the swirled peanut butter on top makes them extra creamy.
One-Bowl Recipe – Less mess, less stress! You only need one bowl to mix everything together.
Great for Any Occasion – Whether you’re baking for a party, a family treat, or just a late-night craving, these peanut butter blondies are the perfect choice.

Ingredients:

⅓ cup brown sugar
⅔ cup granulated sugar
1 large egg (room temperature)
1 egg yolk (room temperature)
⅓ cup unsalted butter (melted)
2 tbsp vegetable oil
1 tsp vanilla extract
1 cup all-purpose flour
6 peanut butter Oreos (plus more for topping, roughly chopped)
4 tbsp creamy peanut butter

Instructions:

Preheat & Prep: Preheat your oven to 350°F (175°C). Grease an 8×8-inch square baking pan or a loaf pan, then line it with parchment paper for easy removal.
Melt & Mix: In a microwave-safe bowl, melt the butter. Whisk in vegetable oil, granulated sugar, brown sugar, and vanilla extract until smooth.
Incorporate Eggs: Add the egg and whisk until fully combined, then mix in the egg yolk.
Add Flour: Using a spatula, gently fold in the all-purpose flour until fully incorporated.
Fold in Oreos: Chop the peanut butter Oreos into chunks and fold them into the batter.
Spread & Swirl: Pour the batter into the prepared baking pan and spread it evenly. Dollop the creamy peanut butter on top and use a knife or toothpick to create swirls.
Bake: Place in the oven and bake for 18-20 minutes for a square pan or 28-30 minutes for a loaf pan. The blondies should have a slightly soft center but set edges.
Cool & Enjoy: Let the peanut butter blondies cool completely before cutting. If you cut them too soon, they may break apart, but we won’t blame you if you sneak a bite while they’re warm! 😋

Tips for the Best Peanut Butter Blondies

Use room temperature eggs for a smooth batter.
For extra crunch, add more chopped Oreos on top before baking.
Want them extra gooey? Slightly underbake the peanut butter blondies and let them set as they cool.

Storage & Freezing

Store blondies in an airtight container at room temperature for up to 4 days or in the fridge for up to a week. You can also freeze them for up to 3 months, just thaw at room temperature before enjoying.

These Peanut Butter Blondies are guaranteed to be a hit with peanut butter lovers and Oreo fans alike. Try them out and let me know how they turn out in the comments.