Brownie Cookie Bars with Oreos
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These Brownie Cookie Bars with Oreos are the ultimate indulgence, layering cookie dough, Oreos, and brownie batter into one irresistibly decadent treat. With minimal effort, you can create a dessert that’s as sinful as it’s delicious, making it perfect for any occasion.
These Triple Layer Brownie Bars are the no-fuss, over-the-top dessert everyone secretly craves. Made with layers of chocolate chip cookie dough, Oreo cookies, and fudgy brownie mix, they’re ridiculously easy to make and downright decadent. Whether you’re whipping them up for a party, bake sale, or just a random Tuesday night, this recipe is a guaranteed crowd-pleaser.
This recipe is my go-to when I’m craving something outrageously rich, gooey, and chocolate-loaded. It’s like dessert’s answer to a three-in-one deal—cookies, Oreos, and brownies in every bite! I love how the crunchy cookie layer pairs beautifully with the fudgy brownie topping for an indulgent, layered treat.
Plus, there’s no need to fuss with homemade batters—just layer store-bought dough and mixes, bake, and enjoy!
It is also a great recipe to get hands-on with the children in the kitchen. Whether you make these as a snack for your kids or a delicious dessert for any occasion, you will love these brookies. And for those who love chocolate desserts, be sure to check out our chocolate concrete or indulge in my s’mores brownie bars, chocolate chip cookies, or turtle brownies.
Why You’ll Love This Recipe
- Effortless Prep – Just layer cookie dough, Oreos, and brownie batter—done!
- Ultimate Chocolate Dessert – Three layers of pure indulgence in every bite.
- Kid-Friendly and Party-Perfect – Great for making with kids or wowing guests.
Ingredients
You’ll love the simple ingredients list for brownie cookie bars, and the best part is that your sinful treats will be ready in no time. The exact measurements can be found in the recipe card below.
How to Make Brownie Cookie Bars with Oreos
Now that you have all your ingredients, it is time to make the layered Oreo cookie brownies. This recipe is so easy to make; you’ll need about 15 minutes of prep time, then cook, slice, and enjoy! Here are the easy-to-follow instructions:
Be sure to check out the full recipe and ingredient list below
- Step One: Let the cookie dough sit at room temperature for 10-15 minutes to soften, making it easier to spread.
- Step Two: Lightly grease an 8×8 baking dish with butter or non-stick spray. Line the bottom and sides of the dish with parchment paper, allowing some overhang for easy removal.
- Step Three: Press the softened cookie dough evenly into the bottom of the prepared pan to form the first layer.
- Step Four: Arrange the Oreo cookies in a single layer on top of the cookie dough.
- Step Five: Prepare the brownie mix according to the package directions.
- Step Six: Pour the brownie batter over the Oreo layer, spreading it evenly to cover the cookies.
- Step Seven: Sprinkle the crushed Oreos evenly over the brownie batter.
- Step Eight: Bake for 35-40 minutes or until a toothpick inserted into the center comes out mostly clean, with just a few crumbs attached.
- Step Nine: Allow the brownies to cool completely in the dish before cutting and serving. If desired, drizzle with chocolate sauce before serving.
Tips for Success
- Go for Fudgy – Use a fudge-style brownie mix for the ultimate gooey texture.
- Line the Pan – Don’t skip parchment paper. It makes cleanup easier and prevents sticking.
- Adjust for Pan Size – If using a 9×9 pan, reduce the baking time to 30–35 minutes.
- Make Ahead – These layered brownies can be made a day in advance and stored at room temp.
Serving Suggestions
You can enjoy these sliced as they are, but I like to serve them with ice cream for an even more decadent treat. You could also serve them warm with pouring or whipped cream. They are such a great dessert that one portion just won’t be enough.
Storage
If you have any leftovers, transfer them to an airtight container and store them at room temperature. They will last up to five days before the texture starts to change a little.
To freeze, cut the cooled bars into individual squares and wrap each one tightly in plastic wrap. Place them in a freezer-safe container or bag and store in the freezer for up to 3 months. Thaw overnight in the refrigerator before serving.
Substitutions & Variations
- Cookie Dough – Experiment with different flavors, such as peanut butter cookie dough or sugar cookie dough. Maybe add smartie-filled cookie dough, homemade cookie dough, or chocolate chip cookie dough.
- Oreos – Use different Oreos for something a little different. Golden Oreos would be great.
- Chocolate Sauce – Use white chocolate, caramel, or even Nutella for drizzling.
Layered Oreo Cookie Brownies FAQs
Can I make these brownies ahead of time? The bars can be baked a day in advance and stored at room temperature in an airtight container.
Should I keep these brownies in the fridge? These brownies can be stored for several days at room temperature or in the refrigerator in an airtight container.
Can I freeze these brownies? Yes. Place them in a freezer-safe container or bag and store in the freezer for up to 3 months.
And that’s it! These Brownie Cookie Bars with Oreos are the no-stress treat that looks impressive but comes together so easily. Whether you’re making them for a birthday bash, girls’ night, or just because you need chocolate, they’re sure to be a hit!
Brownie Cookie Bars with Oreos
Ingredients
- 1 box brownie mix plus ingredients listed on the box
- 16 oz refrigerated chocolate chip cookie dough 1 package
- 14.3 oz double stuffed oreos 1 package
- Chocolate sauce for drizzling
Instructions
- Allow the cookie dough to sit out at room temperature for about 10-15 minutes to soften, making it easier to spread
- Lightly grease an 8×8 baking dish with butter or non-stick spray. Line the bottom and sides of the dish with parchment paper, allowing some overhang for easy removal.
- Press the softened cookie dough evenly into the bottom of the prepared pan to form the first layer.
- Arrange the Oreo cookies in a single layer on top of the cookie dough.
- Prepare the brownie mix according to the package directions.
- Pour the brownie batter over the Oreo layer, spreading it evenly to cover the cookies.
- Sprinkle the crushed Oreos evenly over the brownie batter.
- Bake for 35-40 minutes or when a toothpick inserted into the center comes out mostly clean, with just a few crumbs attached.
- Before cutting and serving, allow the brownies to cool completely in the dish. Drizzle with chocolate sauce before serving, if desired.
Last Step: Please leave a star ★★★★★ rating and a comment below to let me know what you thought!
Notes
- For extra gooeyness, use a fudge brownie mix.
- You can experiment with different flavors of cookie dough, such as peanut butter or sugar cookies.
- Serve with ice cream for an even more decadent treat.
- If using a 9×9 baking dish, adjust your cooking time to 30-35 minutes
Nutrition
Nutrition information is automatically calculated, is intended to serve as an estimate only, and is provided for informational purposes. The accuracy of nutritional information is not guaranteed.
Hi, am I missing an oven temp? Thanks!
Hi Sam,
I used the temperature on the brownie mix of 325f.
Hope this helps