The Best Thick & Fudgy Oreo Cheesecake Brownies are everything you want in one dessert: rich brownies, creamy cheesecake, and crunchy Oreo cookies layered together in every bite.

These cheesecake bars are easier to make than they look. The recipe uses simple ingredients and comes together step-by-step without anything complicated.

If you love fudgy brownies and creamy cheesecake, this is one of those desserts worth making again and again. They are perfect for weekends, birthdays, holidays, or anytime Oreo lovers want something extra special.

Ingredients

This recipe calls for simple ingredients you can find at any grocery store.

Unsalted butter: Adds richness and helps create a fudgy brownie base with soft texture.
Granulated sugar: Sweetens both the brownie layer and cheesecake mixture while helping create shiny tops.
Pure vanilla extract: Adds warmth and balances the chocolate and cheesecake flavors.
Large eggs: Help bind the wet ingredients together and give structure to the brownies and cheesecake layer.
All-purpose flour: Gives the brownies structure while keeping the texture soft and chewy.
Cocoa powder: Creates the rich chocolate flavor in the fudgy brownie batter.
Salt: Balances the sweetness and deepens the chocolate flavor.
Cream cheese: Creates the creamy cheesecake layer. Brick cream cheese works best for a smooth texture.
Sour cream: Helps make the cheesecake mixture creamy and soft.
Oreo cookies: Add crunch and classic cookies-and-cream flavor throughout the cheesecake layer.

You can find the full recipe in the recipe card at the bottom of this post.

Add-ons & Substitutions

These delicious Oreo cheesecake brownies are easy to customize with different flavors or simple swaps.

Dark chocolate chips can be added to the brownie recipe for extra richness.
Golden Oreo cookies work well if you want a different flavor in the Oreo layer.
Mini Oreo cookies can be mixed into the cheesecake mixture for smaller bites throughout.
A drizzle of melted chocolate on the top layer adds extra chocolate flavor.
Chocolate sandwich cookies from other brands also work well in place of Oreos.
A small spoonful of espresso powder can deepen the chocolate flavor in the brownie layer.
Brownie mix can be used for the brownie base if you need a quicker shortcut.

How to Make

Preheat your oven to 325°F and line a 9×9-inch pan with parchment paper. Make sure the parchment covers the bottom and sides so the brownies lift out easily later.

Start with the brownie mixture. Melt the butter in a large mixing bowl and let it cool slightly so it is warm, not hot. If the butter is too hot, it can affect the texture of the batter.

Add the sugar and vanilla extract, then stir until combined. Add the eggs one at a time, mixing well after each addition. The mixture should look thick, glossy, and smooth.

Whisk in the flour, cocoa powder, and salt until evenly combined.

Stop mixing once you no longer see dry flour. Overmixing can make the brownies less soft and fudgy.

Pour the fudgy brownie batter into the prepared pan and spread it evenly into the corners. Bake for 20-25 minutes, until the top looks matte and set (not shiny or wet).

This short bake helps set the brownie layer so the cheesecake mixture stays separate on top.

While the brownie layer bakes, prepare the cheesecake layer. In a large bowl, mix the cream cheese and sugar on low speed until smooth and creamy with no lumps.

Using softened brick cream cheese gives the best results.

Add the vanilla extract, egg, and sour cream, then mix until fully combined. Add the flour and stir gently until incorporated.

The cheesecake mixture should look smooth and creamy.

Fold the crushed Oreos into the cheesecake mixture until evenly distributed. Make sure the cookie pieces are spread throughout so every bite has some crunch.

After the brownie layer bakes, remove the pan from the oven and gently spread the cheesecake layer over the top. Smooth it carefully into an even layer. You can use dollops of batter throughout and then smooth with a spatula.

Return the pan to the oven and bake for 33–38 minutes. The edges should look set while the center still looks slightly soft. The cheesecake layer will continue setting as it cools.

Remove the brownies from the oven and let them cool completely in the pan.

For clean slices and the best cheesecake bars texture, refrigerate for at least 1 hour or a couple of hours before cutting.

Expert Tips

Do not skip the short pre-bake of the brownie layer because it helps keep the layers separate.
Make sure the cream cheese is fully softened before mixing for a smooth cheesecake mixture.
Mixing on low speed helps prevent too much air in the cheesecake layer.
The center should still look slightly soft when removed from the oven because it finishes setting while cooling.
Refrigerating before slicing gives cleaner layers and neater cuts.
Use parchment paper with extra hanging over the sides for easy lifting.
Slightly warm brownies will look softer, but they firm up after chilling.
Store leftover brownies in the refrigerator to keep the cheesecake layer fresh.