Peanut Butter Oreo Blondies

These Peanut Butter Oreo Blondies combine delicious creamy peanut butter with everyone's favourite cookie. The peanut butter dough comes together in one bowl and is filled with crushed Oreo pieces. With more Oreos on top added before baking, there is a sweet and nutty bit in every bite!

The base of this dough is a rich and chewy cookie dough that comes together really easy! The creamy peanut butter is mixed right in, making the dough extra soft .

Before baking, Oreo pieces and spoonfuls of creamy peanut butter are dropped on top. The globs of peanut butter melt into the dough, leaving pockets of them!

This recipe is the perfect combination of cookie and peanut butter. It is so good!

For more blondies recipes, try Oreo Blondies, Raspberry White Chocolate Blondies, and Reese’s Pieces Peanut Butter Blondies.

Why this recipe works

Easy to make - Everything comes together in one bowl with super simple ingredients!

Peanut butter + Oreos - Such an underrated and creamy combo!

Blondies recipe - These are soft and rich blondies. The peanut butter makes the dough extra soft!

Ingredients Notes

Butter – Unsalted butter works best. This will be melted.

Egg & egg yolk – Remove 2 hours before baking.

Oreos - I used the store name brand, but a no name brand works too. Just make sure they are regular Oreos, and not double stuf.

Peanut butter - I used creamy peanut butter. You may also use crunchy. Don't use natural, as the consistency is too runny and the bars won't set properly.

Step by step instructions

Here is how to make and bake these peanut butter Oreo bars. You will need an 8×8 square pan lined with parchment paper, a large mixing bowl, a spatula, and a whisk.

Step 1 – Prep. Grease the pan. For easy removal of the brownies, place parchment paper on the bottom and 2 sides of the pan. Grease again and then set aside.

Step 2 - Whisk the butter and sugar. In a large bowl, whisk the melted and cooled butter and white sugar until well combined. Then whisk in the peanut butter.

Step 3 - Add the wet ingredients. Add the egg, egg yolk, and vanilla. Continue whisking for another minute or so.

Step 4 - Fold in the dry ingredients. With a rubber spatula, fold in the flour, baking powder, and salt. Once there are close to no dry streaks, add in the crushed Oreos and fold until no dry streaks appear.

Step 5 - Transfer the dough. Evenly press the dough into the prepared pan using a spatula or your hands. Add extra Oreos and globs of peanut butter on top.

Step 6 - Bake. Bake the bars for 24-27 minutes. Mine took 27 minutes. Allow to cool, slice, and enjoy!

My favourite way to eat these bars is slightly warm. When they are warm, the peanut butter is all melty. Yum!

Expert Baking Tips

• Measure the flour accurately. Spoon it – don’t directly put the measuring cup into the bag of flour. Use a gram scale for the most accurate measurements.
• Use a creamy or crunchy peanut butter. Good quality like Jif or Kraft!
• Use a light or dark metal pan to bake the blondies. I find that glass and ceramic tends to burn the edges of the blondies to quickly!

FAQ

Can I use a 9x9 pan?

Yes. If you want to use a 9×13, make sure to double the recipe. 

Can I use other flavoured Oreos?

Yes! Just don't use double stuf.

Storing & Freezing

Store your Peanut Butter Oreo Bars in an airtight container or ziplock for up to 5 days at room temperature or in your refrigerator.

Freeze the bars in a ziplock bag for up to 3 months. Once ready to consume, remove 2 hours before hand to thaw at room temperature.

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