Cookies & Cream Brownies Recipe

These cookies & cream brownies are brownie sky-scrapers! They have 4 equally indulgent layers including homemade brownies, Oreos, cookies & cream buttercream frosting, and smooth chocolate ganache. Over-the-top in the best way.

LOL. Kidding.

These cookies & cream brownies are basically 500 cookies in one. And tomorrow is National Brownie Day so obviously we’re celebrating in a very big, very over-the-top, very caloric way. If you dig Oreos, brownies, and chocolate… Merry Christmas to you. 😉

4 Layer “Fork & Plate Brownies”

I call these my fork and plate brownies because they’re so thick, fudgy, and irresistibly dense that you need a fork and plate for consuming. With 4 equally indulgent layers, they’re brownie sky scrapers. Here’s each layer listed out:

Brownie Base

This is a 9×13-inch pan of brownies. I won’t go into much detail about the brownie base because you can use homemade brownies or boxed brownies. Obviously I recommend my homemade brownies, but I know schedules get crazy and time is a luxury, especially during the holidays. So use your favorite boxed mix if needed. I will say that my homemade brownies recipe is seriously fudgy and takes about 10 minutes to throw together. 🙂

Success Tip: Lining the pan with parchment paper makes it much easier to remove the bars before slicing and serving. I use the same tip when making rice krispie treats and M&M cookie bars, too.

The Oreo Layer

Oreos are pressed into the top of the brownie batter before baking. I recommend using Double Stuf Oreos, which comes with 30 Oreos in the package. Don’t steal a taste because you’ll need every single Oreo for these cookies & cream brownies.

Did you know that the number of Oreos in packages varies?! Regular Oreos used to have 45 cookies in each package, now I think it’s 36. Double Stuf has 30.

You’ll use 24 Oreos on top of the brownie batter, then 6 crushed Oreos in the cookies & cream buttercream frosting.

If you love baking with Oreos, try my recipes for Oreo cookie crust, cookies and cream cookies, cookies and cream cake, Oreo balls, and cookies and cream pie next!

Cookies & Cream Buttercream Frosting

Legit tastes like the filling of an Oreo cookie. You’ll need butter, confectioners’ sugar, vanilla extract, a little milk, and 6 crushed Oreos. A pinch of salt helps offset the sweetness. Have you truly ever seen a more perfect sight? Forget the brownies, eat this with a spoon instead.

Chocolate Topping

This chocolate topping is chocolate ganache kicked up a notch. Made from just chocolate and butter, this thick chocolate layer firms up like a dream. It’s not sticky, but it’s still soft enough for cutting through. Speaking of cutting through layered brownies… things can get a little messy, but I have some tips for you in my recipe notes.

Christmas Cookies & Cream Brownies

‘Tis the season and if you want a festive version of these cookies & cream brownies to serve alongside your Christmas cookies, I have a few ideas up my sleeve:

Add 1 teaspoon of peppermint extract to the brownie batter
OR add 3/4 teaspoon of peppermint extract to the cookies and cream buttercream
Use mint Oreos instead!
Top chocolate with crushed candy canes or red/green sprinkles

Or even add 1/2 teaspoon of peppermint extract to the brownie batter and 1/2 teaspoon to the buttercream. Always use peppermint extract sparingly because it’s a fine line between delicious peppermint flavor and… toothpaste flavor.

And for Valentine’s Day, try my red velvet Oreo brownies!

Prep Time 30 mins

Cook Time 35 mins

Total Time 1 hr 5 mins

Cuisine: American

Courses: Brownies

Servings: 24

Description

These cookies & cream brownies are brownie sky-scrapers! They have 4 equally indulgent layers including homemade brownies, Oreos, cookies & cream buttercream frosting, and smooth chocolate ganache. Over-the-top in the best way.

Ingredients You’ll Need

1 9 brownies homemade batter OR 1 9×13-inch pan brownie batter
24 Oreos (I use Double-Stuf Oreos)
3/4 cup (12 Tbsp; 170g)
3 cups (360g)
2 Tablespoons milk
1/2 teaspoon pure vanilla extract
6 whole Oreos, chopped (about 3/4 cup, or 70g)
pinch of salt
1/2 cup (8 Tbsp; 113g)
1 heaping cup (around 200g)

Instructions

1
Preheat oven to 350°F (177°C). Line the bottom and sides of a 9×13-inch baking pan with parchment paper, leaving an overhang on the sides to lift the finished brownies out (makes cutting easier!). Set aside.
2
Prepare brownie batter. Spread into prepared baking pan. My batter for homemade brownies is very thick, so do your best to spread it to the edges. Doesn’t have to be perfectly neat. Press 24 Oreos down into the top of the brownie batter; you want 6 rows of 4 Oreos.
3
Bake for 32 minutes, then test the brownies with a toothpick. Insert it into the center of the pan. If it comes out with wet batter, the brownies are not done. If there are only a few moist crumbs, the brownies are done. Keep checking every 2 minutes until you have moist crumbs. My homemade brownies with Oreos on top take about 35 minutes.
4
Remove from the oven and place on a wire rack to cool completely in the pan. Once cool, lift the parchment paper out of the pan using the overhang on the sides. Do not cut into squares yet. (TIP: It’s helpful to place the whole slab of brownies (parchment paper still underneath) on a baking sheet because you will need to chill the layers. The baking sheet makes transporting to the refrigerator easier!)
5
With a handheld or stand mixer fitted with a paddle attachment, beat the butter on medium speed until creamy, about 2 minutes. Add confectioners’ sugar, milk, and vanilla extract. Beat on low speed for 30 seconds, then increase to high speed and beat for 2 full minutes. With a spoon or rubber spatula, fold in the chopped Oreos. Taste. Add a pinch of salt if frosting is too sweet. I like adding 1/8 teaspoon salt. Spread buttercream on top of cooled brownies. Chill uncovered for 30 minutes and up to 1 day in the refrigerator.
6
Cut the butter into a few pieces and place in a small saucepan with the chocolate chips. Melt the two together on low heat, stirring constantly, until smooth and combined. You can also use the microwave—stop and stir every 20 seconds until melted and smooth.
7
Pour chocolate on top of the buttercream. Spread all over the top in an even layer. Allow chocolate to set at room temperature for a few hours or in the refrigerator for 1 hour before slicing and serving. See recipe notes for my tips for cutting neat brownie squares.
8
Cover and store leftover brownies in the refrigerator for up to 1 week.

Keywords: butter, chocolate chips, confectioners-sugar, milk, Oreos, vanilla extract

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