Brownie Swirled Peanut Butter Oreo Cookies
Thick, chewy peanut butter cookies loaded with crushed Oreo pieces and dramatic brownie swirls throughout. The combination creates a triple-chocolate experience with creamy peanut butter undertones. Perfect for potlucks, bake sales, or when you can't decide between cookies and brownies. The marbled appearance makes these cookies as visually striking as they are delicious, and the soft texture keeps them irresistible for days.
Ingredients
Instructions
- 1
Preheat oven to 375 degrees F
- 2
Cream butter and sugars until well combined
- 3
Add peanut butter until well combined
- 4
Beat in egg and vanilla on low speed until smooth
- 5
Sift flour, baking soda, baking powder, and salt into large bowl
- 6
Add dry ingredients and broken Oreos on low speed until just combined
- 7
Pour cookie dough onto rimmed cookie sheet and press to about 1/2 inch thick
- 8
Prepare brownie mix according to package directions
- 9
Drizzle 3 tablespoons brownie batter evenly over cookie dough
- 10
Gently swirl brownie batter into cookie dough with toothpick a few times
- 11
Scoop cookie dough with brownie swirls onto parchment lined baking sheet
- 12
Bake for 9-11 minutes until cooked through but still soft
- 13
Cool for 3 minutes on baking sheet before transferring to cooling rack
Tips
Don't overmix the brownie swirls - a few gentle motions with the toothpick creates the best marbled effect without muddying the colors.
Press the cookie dough evenly but don't worry about perfect edges - rustic appearance adds to the homemade charm.
Use a medium cookie scoop for uniform size and baking time, ensuring all cookies finish at the same rate.
Good to Know
airtight container at room temperature up to 5 days
dough can be made 1 day ahead and refrigerated, bring to room temperature before baking
best served slightly warm or at room temperature
Common Mistakes
avoid overmixing brownie swirls to prevent muddy appearance
don't overbake to keep cookies soft and chewy
Substitutions
Dairy-Free Swaps
Nut-Free Alternatives
good texture
Full guide →General Alternatives
more control over ingredients
FAQ
Can I use different cookie pieces instead of Oreos?
Yes, chocolate chip cookies, graham crackers, or vanilla wafers work well. Break into similar sized pieces for even distribution throughout the dough.
What if my brownie batter is too thick to drizzle?
Thin it slightly with a tablespoon of milk or melted butter. The batter should flow easily but not be so thin it soaks into the cookie dough.
How long do these cookies keep fresh?
Store in an airtight container for up to 5 days at room temperature. They can be frozen for up to 3 months in freezer bags.