Ultimate Chocolate Chip Cookie n’ Oreo Fudge Brownie Bar

This is truly the ultimate dessert bar. When chocolate chip cookies, Oreo cookies, and brownies all come together for one amazing dessert. These Ultimate Chocolate Chip and Oreo Fudge Brownie bars are so easy to make. All 3 layers cook at the same time. Then top it with some vanilla ice cream and hot fudge to take these over the top.

We love a good fudgy and chewy dessert. Everyone in the family has their favorite, whether it be cookies or brownies. But now you can make everyone happy with one dessert.

The bottom layer of these Ultimate Chocolate Chip Cookies and Oreo Fudge Brownie Bars is delicious chocolate chip cookie dough. Top that with double stuff Oreo cookies. YUM! The top layer is brownie batter.
Now isn’t that a chocolate lovers dream? It’s really a no fail recipe. Place in the oven and let them cook. Be sure not to overcook them. It’s better to be on the fudgy side, rather than hard and burned. But if you keep an eye on them you will be fine.

After we made these amazing chocolate chip cookies and Oreo fudge brownie bars, my husband took them to work. Some of the guys he works with called them “brownies on steroids.”  They were really good, especially with ice cream and chocolate on top!

can you use store bought cookie dough?

We love this recipe  the way it is written because there is nothing better than homemade chocolate chip cookies. And we may sneak a little of the cookie dough while we are making them.

But for convenience you could definitely use store bought cookie dough in place of the homemade cookie dough in this recipe.

how to store the leftovers

First of all, if you have any leftovers we are amazed. These went so fast at our house. But it is so easy to store the leftovers. They are fine to put on a plate covered with plastic wrap for a few hours.

If you are saving some for the next day, place them in an airtight container and keep them in the fridge. You can eat them cold, or let them set out for an hour before serving. Or the yummiest way is to microwave them until a little warm. YUM!

do you have to top them off with ice cream?

These Ultimate Chocolate Chip Cookie and Oreo Fudge Brownie Bars can stand on their own just fine. It is the ultimate brownie and it’s amazing.

If you want to kick them up a bit, top them off with a scoop of vanilla ice cream and some chocolate syrup or hot fudge. You will want to sit back in a nice comfy chair and enjoy every bite.

how to make Ultimate Chocolate chip and oreo fudge brownie bars

  • Preheat oven to 350 degrees.
  • Cream the butter and sugars in a large bowl with an electric mixer on medium speed for about 3 minutes.

  • Add in eggs and vanilla and mix well until all is thoroughly combined.

  • In a separate bowl whisk together the flour, baking soda and salt. Add this flour mixture to the brown sugar/butter mixture.

  • Stir until combined and then fold in the chocolate chips.

  • Spread the dough into the bottom of a 9 x 13 inch baking dish that has been covered with parchment paper, and lightly sprayed with non stick cooking spray.
  • Top with a layer of Oreos.

  • Make the brownie mix as directed on the box and add in 1/4 cup hot fudge topping to the brownie batter.
  • Pour the brownie batter over the top of the Oreos.

  • Bake at 350 for 35-45 minutes. Every oven varies, so watch closely.
  • Remove from oven and let cool for about 10 minutes before cutting.
  • You can serve these brownie bars warm or cold.
  • We like to add ice cream and hot fudge on top. (optional)

helpful items for this recipe

  1. 9 x 13 Inch Glass Baking Dish – This baking dish is one of our favorites. We like that is also come with a lid.
  2. Hand Mixer – You’ll love this hand mixer. It comes with traditional beaters and a whisk. 
  3. Glass Mixing Bowl Set – We love this set of mixing bowls that comes in 3 sizes. 
  4. Parchment Paper – This is our go to paper to prevent everything from sticking.
  5. Small Spatula – This is perfect for those hard to get areas when you want a nice clean slice to come out perfect. 

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more tasty brownie recipes

Here are more of our favorite brownie recipes:

Serves: 20

Ultimate Chocolate Chip Cookie n' Oreo Fudge Brownie Bar

15 minPrep Time

40 minCook Time

55 minTotal Time

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  • 1 cup butter (softened)
  • 1 cup sugar
  • 3/4 cup brown sugar
  • 2 eggs
  • 1 Tablespoon vanilla
  • 2 1/2 cups flour
  • 1 teaspoon baking soda
  • 1 teaspoon salt
  • 1 (12 ounce) package milk chocolate chips
  • 1 (15.35 ounce) package Double Stuf Oreos
  • 1 (18.3 ounce) Brownie mix
  • 3 Tablespoons water
  • 1/2 cup vegetable oil
  • 2 eggs
  • 1/4 cup hot fudge topping


  1. Preheat oven to 350 degrees F.
  2. Cream the butter and both sugars in a large bowl with an electric mixer on medium speed for 3-5 minutes. Add the eggs and vanilla and mix well to thoroughly combine.
  3. In a separate bowl, whisk together the flour, baking soda and salt, then slowly incorporate with the mixer until the flour is just combined.
  4. Fold in chocolate chips.
  5. Spread the cookie dough in the bottom of a 9 × 13 inch baking dish that's been lined with parchment paper and sprayed with cooking spray.
  6. Top with a layer of Oreos.
  7. Mix together brownie mix according to directions on the box, adding an optional 1/4 cup of hot fudge topping to the mix.
  8. Pour the brownie batter over the cookie dough and Oreos.
  9. Bake at 350 degrees F for 35-45 minutes.
  10. Cool for a few minutes before slicing.
  11. You can serve these warm or cold.
  12. We like to top with ice cream and hot fudge topping.


soy free
seafood free
treenut free
sesame free
mustard free



1138 cal


3 g


238 g


32 g
Click Here For Full Nutrition, Exchanges, and My Plate Info

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24 Responses to “Ultimate Chocolate Chip Cookie n’ Oreo Fudge Brownie Bar”

  1. Hello! I have made these 2 times now and I can never get the middle to cook all the way. They are a ooey-gooey delicious mess. Any tips on getting them to cook all the way through? I have tried the covering in foil for 30 mins / uncovered for 20 mins. -Thank you! :)
    • Hi Sarah! These are a heavy, gooey brownie bar. You could try using 1 square of margarine and 1 square of butter. Butter tends to sink a little. Maybe cook just a little longer if you can without burning. Do you know if your oven temp is a little off? That can make a difference. Sorry the middle isn't cooking all the way, these have a lot of ingredients that are not cheap!! Hope this helps! Thanks so much for stopping by our blog. Have a great day! Cyd (mom of the Six Sisters)

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