I love brownies and have been wanting to make this idea for weeks. I finally decided to try it this morning. I planned to make homemade brownies but ran out of time and used a box mix instead — you can use the same method with your favorite from-scratch brownie recipe. Cookies and cream is one of my favorite combinations, and swirled into these brownies it’s absolutely delicious.
To top them, I made a rich chocolate-peanut butter ganache that’s so good you’ll want to lick the bowl. My little one is currently having a field day with goldfish crackers all over the carpet, so I’ll keep this short. Enjoy!

Cookies and Cream Swirled Brownies with Chocolate Peanut Butter Ganache
Easy brownies swirled with Oreo crumbles and topped with a rich chocolate and peanut butter ganache.
Course: Dessert
Cuisine: American
Prep Time 15 minutes
Cook Time 45 minutes
Total Time 1 hour
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Ingredients
- 1 box brownie mix 9×13 size
- 8 oz softened cream cheese
- 1/3 cup sugar
- 10 Oreos broken into pieces
- 1 cup semi sweet chocolate chips
- 1 ½ tablespoons creamy peanut butter
- 3 tablespoons half and half
Instructions
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Preheat oven to 350°F. Prepare the brownie mix according to the package directions. Pour the batter into a lined and greased 9×7-inch (or 9×13-inch if you prefer thinner brownies) baking dish.
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In a medium bowl, beat the softened cream cheese with the sugar until smooth. Fold in the broken Oreo pieces. Dollop or spoon the cookies-and-cream mixture evenly over the brownie batter, then gently swirl it into the batter with a knife — avoid scraping the bottom of the pan. Bake 40–45 minutes, or until a toothpick inserted in the center comes out clean. Let the brownies cool completely.
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For the ganache, place the chocolate chips in a microwave-safe bowl and heat about 1 minute. Stir in the peanut butter and mix until smooth. If needed, microwave another 15–30 seconds and stir until glossy. Stir in the half-and-half until fully combined, then spread the ganache over the cooled brownies. Cut into squares and serve.
Notes
I prefer a thicker brownie, so I use the smaller baking dish, but you can bake in a 9×13-inch pan for thinner bars if you like.
Keywords: easy brownies, oreo brownies, peanut butter brownies