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Oh. My. Gosh. YOU GUYS. These brownies are, like, EPIC. You may see the title and say “Pffft. Cookies ‘n Cream Brownies. So? They have Oreos. So what?”

But you GUYS. They’re not just Oreo Brownies. They’re unlike any brownies I’ve ever made before. Just LOOK at them!

Cookies 'n Cream Extreme Brownies - one of the best brownie recipes EVER! From Extreme Brownies: 50 Recipes for the Most Over-the-Top Treats Ever by Connie Weis/Andrews McMeel Publishing, 2014

RIGHT??? See what I mean???

Back when I posted these Reese’s Brownies with Oreo Crust, I thought I’d outdone myself in the epic-holy-OMG-serious brownie business. But I was wrong. Oh, so wrong.

These Cookies ‘n Cream Brownies are extreme brownies, to the nth degree. Fudgy, dark chocolate brownie, Oreos, fluffy white frosting, MORE Oreos, and chocolate sauce.


Cookies 'n Cream Extreme Brownies filled with Oreos and topped with fluffy white frosting! From Extreme Brownies: 50 Recipes for the Most Over-the-Top Treats Ever by Connie Weis/Andrews McMeel Publishing, 2014

This recipe is from my new favorite cookbook, Extreme Brownies by Connie Weis. I received this book a few weeks ago and I’ve been drooling over the recipes ever since. (Remember the caramel peanut butter cookie bars last week? That Caramel????)

Her entire book is full of brownie recipes and every single one has this brownie base that is a HUNK ‘O brownie. Like, seriously.

The recipe starts with 2 sticks of butter. That just tells you it has to be good. #everythingisbetterwithbutter

Then you add dark chocolate and cocoa powder and sugar and vanilla. And THEN you add Oreos. I’m not kidding, the pan of baked brownies is heavy. You could use it to knock out an intruder. But that would be wasting brownies, so maybe use a bat for that instead.

Seriously, have you looked at these brownies yet?

Cookies 'n Cream Extreme Brownies {From Extreme Brownies: 50 Recipes for the Most Over-the-Top Treats Ever by Connie Weis/Andrews McMeel Publishing, 2014}

So this recipe is a little more involved than my normal brownie recipes. There’s some sifting involved but that’s okay, it’s worth it. You have to let the brownies sit overnight, but you know that makes everything taste better (like cookie dough).

The brownies alone are to die for. Jordan (who doesn’t like dark chocolate, mind you) proclaimed these the BEST brownies she’s ever had. (Which kind of was a blow to my psyche but whatever, she’s 9. She doesn’t get it.)

Then you top them with a fluffy white frosting that tastes like Oreo filling. The secret to the filling? Marshmallow fluff. Who knew?

Then, because there’s not enough Oreos inside the brownies, you top the frosting with more (mini) Oreos and a chocolate sauce.


Cookies 'n Cream Extreme Brownies {From Extreme Brownies: 50 Recipes for the Most Over-the-Top Treats Ever by Connie Weis/Andrews McMeel Publishing, 2014}

A few notes about this recipe:

  • In her book, Connie calls for Dutch-process cocoa and 60% cacao chocolate. Now, because I bake a lot, I know where to get that stuff, but I don’t usually stock it. I adapted the recipe using what I (and most regular bakers) have on hand. I used Hershey’s Special Dark chocolate chips AND cocoa powder. You can also use regular cocoa powder (not the special dark), and I believe some of the other brands of chocolate chips have darker than semi-sweet flavors. Check your local store.
  • Yes, you need cake flour. I’m sorry. I feel the same way about having to buy another flour. But if you forget, or need these rightthisminute before you can go shopping, did you know you can make your own cake flour?
  • Typically, I don’t use Crisco (vegetable shortening) in my recipes. But, in the interest of sticking with the recipe, I used it and the frosting is amazing. I suggest buying the sticks of Crisco for easy portioning. (Who wants to clean that measuring cup??)
  • Because it’s September, the white chocolate covered Oreos are not in stores. Those are a seasonal product for the holidays, so if you see them, buy 2 boxes and use them instead of the regular Oreos. But regular work just fine…obviously. You could also try these with mint or peanut butter Oreos. Can you imagine??
  • These require a napkin and a fork. They can also serve as a meal. Holy cow. Did you LOOK at them?

And I’m still dreaming about that frosting! I cannot wait to make that again really soon.

EPIC Cookies 'n Cream Extreme Brownies {From Extreme Brownies: 50 Recipes for the Most Over-the-Top Treats Ever by Connie Weis/Andrews McMeel Publishing, 2014}

Seriously – these are EPIC. Make them and then get them out of your house immediately. It’s what I had to do!

brownie on teal napkin with frosting and oreos

Cookies ‘n Cream Extreme Brownies

4 from 2 votes
These brownies are extreme! They're fudgy, dark, chocolatey, full of Oreos, and topped with a mouth-watering fluffy white frosting!
Yield 24 -36 bars


  • For the Brownies:
  • 2 sticks 1 cup or 8 ounces unsalted butter
  • 1 1/3 cups 60% cacao bittersweet chocolate chips I used Hershey’s Special Dark
  • 4 large eggs
  • 2 cups granulated sugar
  • 1/4 teaspoon salt
  • 1 1/2 teaspoons pure vanilla extract
  • 1/4 cup + 1 tablespoon cake flour
  • 1/4 cup + 2 tablespoons unsweetened cocoa powder Dutch process or regular or Special Dark
  • 15 Oreo Cookies or, if you can find them, use the White Fudge Covered Oreos
  • For the Fluffy White Frosting:
  • 8 tablespoons vegetable shortening Crisco
  • 1/2 stick 1/4 cup unsalted butter, softened
  • 1 cup marshmallow creme such as Fluff
  • 1 teaspoon pure vanilla extract
  • 1 teaspoon vanilla bean paste or another 2 teaspoons pure vanilla extract
  • 1 1/4 cups powdered sugar
  • Topping:
  • About 1 1/4 cups or more Oreo Mini Cookies
  • 2 tablespoons unsalted butter
  • 2 tablespoons light corn syrup
  • 1/2 cup semisweet chocolate chips
  • 2 teaspoons very hot water


  • Preheat oven to 350°F. Line a 9x13” pan with foil and grease with butter or spray with cooking spray.
  • Cut the butter into 1-inch slices and place in a small saucepan. Melt over low heat and add the chocolate chips, stirring until the chocolate is melted and smooth. Turn off the burner but leave the pan on it (to stay warm).
  • Whisk the eggs in a large bowl. Add the sugar and salt and whisk until incorporated. Gradually whisk the chocolate mixture into the egg mixture. Whisk in the vanilla.
  • Place the flour and cocoa in sifter or a wire mesh strainer. Sift directly into the batter and stir with a spatula. Pour batter into prepared pan and spread until even. Place the 15 large Oreos evenly on top and press down lightly to cover with the batter.
  • Bake for 28-34 minutes until a toothpick inserted in the center comes out clean. Cool to room temperature on the counter, then cover and let sit overnight (you can also refrigerate it overnight).
  • Make the frosting: beat shortening and butter in a stand mixer with the paddle attached (or a hand mixer). Mix in marshmallow creme and vanilla. Slowly mix in powdered sugar. Spread frosting evenly over top of the brownies. Top evenly with mini Oreos.
  • Make the topping: melt the butter and corn syrup in a small saucepan. Turn off the heat and stir in the chocolate chips, then stir in the water to thin. Drizzle over the top of the frosting. Chill the frosted brownies for at least 1 hour until the frosting and topping sets. Remove from pan and slice into bars.
Nutritional information not guaranteed to be accurate


Reese’s Brownies with Oreo Crust

Oreo Peanut Butter Cup Brownies (5 of 9)w

Brownie Gooey Bars

Brownie Gooey Bars (4 of 5)

Peanut Butter Swirl Brownies

Peanut Butter Swirl Brownies (1 of 4)w

Sweets from friends:
Ultimate Chocolate Chip Cookie ‘n Oreo Fudge Brownies by Kevin & Amanda
Browned Butter Brownies by Something Swanky
Nutella Brownies by Buns in My Oven

Last Updated on May 13, 2020

Dorothy Kern

Welcome to Crazy for Crust, where I share recipes that are sometimes crazy, often with a crust, and always served with a slice of life.

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  1. This is my college aged daughters favorite dessert! She always requests these when I’m making something just for her! There is no other dessert that compares to these. It’s the creamy white middle I think that makes them special. Try it

  2. Made these for my son’s varsity baseball banquet and they were gone in a second. Every time those boys are over they request this. It is sweet but they love it.

  3. Brownie part is a hit with the whole family, but not even my 9 year old liked the sweetness of the frosting. We decided not to do the chocolate drizzle because we were already seeing how sweet this was getting. We will be making the brownie again.

  4. Oh My! What a delicious ride! Your descriptive writing about these Epic Brownies was funny, enticing and truly an escape into the land of fluff and chocolate! Who wouldn’t want to go there! I’m in and will definitely enjoy diving into these. May have to give away most of the pan as I have a pair of skinny jeans staring at me……………thanks for your great recipes and writings!