Oreo Brownie Cookie Bar

Oreo Brownie Cookie Bars combine fudgy brownies, chocolate chip cookie dough, and Oreo cookies in one irresistible, over-the-top dessert recipe.

This Oreo Brownie Cookie Bar is insanity.

Chocolate, Oreos, cookie, brownie, fudge-y straight up insanity.

I find myself sharing more and more sweets here lately; but they are not for me, mind you.

I live with three garbage disposals and they mainly dispose of sugar, chocolate and/or more sugar and chocolate….throwing in the random rack of ribs and a Cheez-It or two. It’s a good thing I’ve learned to sneak veggies into some of my dishes.

Sssshhhh.

*Don’t tell Katie*.

What is Oreo Brownie Cookie Bar?

This is a decadent dessert that combines the best of three dessert favorites; rich, fudgy brownies, soft, chewy sugar cookies, and the classic flavor of Oreo cookies. To make it even more indulgent, I’ve added a drizzle of hot fudge sauce. 

Well, ok, maybe two drizzles.

Feel free to use ganache instead. I typically would have, but honestly I didn’t even think about it until later. The truth is, either one will be good but ganache is a bit more luxe than hot fudge. Ganache is one of the best things that ever happened to desserts in my personal opinion. It’s easy, inexpensive, and can transform something from just o.k. to seriously fabulous. You probably have what it takes to make ganache in your pantry now.

How Do You Make Oreo Brownie Cookie Bar?

Despite its complex appearance, this beauty is fairly straightforward and easy to make. You basically tackle each layer at a time – mix, pour and layer.

I start with the cookie layer. After lining a 9 x 13 size casserole dish with parchment paper, spoon the cookie dough into the dish and spread evenly, then put a layer of whole Oreo cookies to completely cover it.

Finally, make the brownie layer using the directions given on the box to make the batter and pour that over the Oreos, spreading it evenly over the cookies. Then you bake! Once cooled, you can top it with hot fudge and dig in. 

It’s ridiculously addictive.

But, everybody loves chocolate so I have a good excuse.

❓ FAQ: Oreo Brownie Cookie Bars

Q: Can I make Oreo Brownie Cookie Bars ahead of time?
Yes! These bars stay fresh for 3–4 days in an airtight container at room temperature. You can also refrigerate them to extend freshness up to a week.

Q: Can Oreo Brownie Cookie Bars be frozen?
Absolutely. Wrap individual bars tightly in plastic wrap, then store in a freezer bag or container for up to 3 months. Thaw at room temperature before serving.

Q: What kind of Oreos work best for Oreo Brownie Cookie Bars?
Classic Oreos are the most popular, but Double Stuf, flavored Oreos, or even seasonal varieties (like birthday cake or peppermint) work great for fun twists.

Q: Do I need to use boxed brownie mix, or can I make them from scratch?
You can use either. Boxed brownie mix keeps things quick and easy, while homemade brownies make them extra rich and fudgy. Both versions taste amazing.

Q: How do I know when Oreo Brownie Cookie Bars are done baking?
They’re ready when the edges are set and a toothpick inserted in the center comes out with a few moist crumbs (not wet batter). Overbaking can dry them out, so keep an eye on them.

Oreo Brownie Cookie Bars are the dessert equivalent of being able to pick more than just one thing off the menu when you can’t decide. They’re fudgy, chewy, crunchy, and just messy enough to make you feel like a kid again (in the best way). Bake them, share them, or hoard them if that makes you happy. Just don’t be surprised when people start ‘dropping by’ your kitchen a little more often.

Here’s your printable-

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Oreo Brownie Cookie Bar

Yield: 12 Bars

Prep Time: 15 minutes

Cook Time: 1 hour

Total Time: 1 hour 15 minutes

Easy Oreo Brownie Cookie Bars recipe with rich brownies, chocolate chip cookie dough, and Oreos baked together into one decadent treat.

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Ingredients

• 1 box Fudge Brownie mix, family size
• 1 packet Sugar Cookie mix, Family Size
• 1 package Oreos
• 1 jar Hot Fudge

Instructions

1. Preheat oven to 350°.
2. Combine the cookie mix ingredients according to package directions.
3. Do the same with the brownie mix, but add 1/4 cup of the hot fudge to the batter and stir.
4. Line a 9x13 baking dish with wax paper.
5. Begin to layer: First spoon the cookie dough into the dish and spread evenly, followed by a layer of Oreos and finally the brownie batter on top of the Oreos, spreading evenly.
6. Bake for 45-55 minutes, or until done in the center (test with a toothpick).
7. Drizzle with hot fudge.

Recommended Products

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn advertising fees by linking to Amazon.com and affiliated websites.

• 
  Oasis Supply, Quilon® Parchment Paper Baking Liner Sheets (100, Full Sheet 24" x 16")
• 
  NutriChef 4-Pack Glass Mixing Bowls with BPA-Free Lids, 1QT, 1.6QT, 2.5QT, & 3.7QT
• 
  Ultra Cuisine Square Cake Pan Bundle - 9x13 Brownie Pan & Square Cake Pan 8x8 Inches

Nutrition Information:

Yield: 6 Serving Size: 1
Amount Per Serving: Calories: 95Total Fat: 5gSaturated Fat: 1gTrans Fat: 0gUnsaturated Fat: 3gCholesterol: 8mgSodium: 76mgCarbohydrates: 13gFiber: 0gSugar: 5gProtein: 1g

The provided nutrition calculated may not always be accurate.

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This article was initially published on Dec 2, 2011 and updated on May 2nd, 2023.