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Tessa’s Recipe Rundown
Taste: Like an Oreo, but in brownie form!
Texture: Fudgy and chewy with perfectly crunchy bites of Oreo throughout.
Ease: Just 1 bowl with no special equipment or lengthy steps required!
Why you’ll love this recipe: A simple twist on the classic that your whole family will adore.
These Oreo Brownies were inspired by another recipe I recently published: Chocolate Cookies & Cream Cookies.
The trick to both that recipe and this brownie recipe (besides folding in chopped Oreo cookies) is to add a small amount of black cocoa along with the Dutch-process cocoa powder.
The result is an out-of-this-world fudgy, chocolatey brownie with a perfect amount of Oreo flavor that’s ready in under 1 hour.
Key Recipe Ingredients
Butter and Oil: The butter lends flavor, while the oil helps create that moist and chewy box-mix texture that keeps the brownies soft for days. Use any neutral liquid oil you prefer.
Dutch-Process Cocoa Powder: This is my preference for most brownies. I find it provides a smooth and rich chocolate flavor, and because it tends to have double the cocoa fat as most natural cocoa powders, creating a rich, fudgy, moist texture.
Black Cocoa: This is what Oreos are made from, but it doesn’t actually offer much chocolate flavor. Adding a small amount in addition to the Dutch-process helps bolster the Oreo notes without sacrificing the chocolate flavor.
Cornstarch: A small amount helps tenderize the batter to create a soft and chewy texture. I also find it helps develop that shiny crust on top. If you don’t have it, you can omit it.
Chocolate Chips: I like semisweet chips in this recipe. You can use white chocolate chips if you prefer. Either way, I don’t recommend omitting because they help to create taller brownies with a shinier crust on top.
Oreos (Chocolate Sandwich Cookies): The star ingredient! Don’t chop them so finely you end up with Oreo dust and no contrast of texture. But also don’t chop them so large that the brownies are hard to cut! And keep the filling intact.
Tessa’s Tips
- Use a light-colored metal pan for the most even baking. If using glass or ceramic, you will need to increase the baking time.
- Whisk the eggs vigorously for the full minute to encourage a shiny top.
- Measure flour accurately (spoon & level, or better yet, by weight) to avoid dry or cakey brownies.
- Cool completely before cutting for clean squares and a chewier texture.
- For extra neat slices and a fudgier texture, chill the brownies for 30 minutes before serving.
- Use a sharp knife and wipe it clean between cuts.
Storage & Make ahead
Room Temperature: Store in an airtight container for up to 3 days.
Freezer: Store in an airtight container for up to 2 months. Thaw to room temperature before serving.
Serving: These brownies change texture depending on the temperature they’re served at:
* Warm: gooey, less chewy, messy
* Room temperature: Chewy
* Chilled: Fudgy and firm
Frequently Asked Questions
Yes. Simply omit the black cocoa powder. The brownies will still have plenty of Oreo flavor from the cookies themselves.
Yes. Double Stuf cookies should work and provide slightly more cream filling flavor.
Yes. Wrap individual slices tightly and freeze for up to 2 months. Thaw before serving.
Yes. Double all ingredients and bake in a 9×13-inch light-colored metal pan. Increase the bake time anywhere from 1-3 minutes.
A light-colored metal baking pan produces the most even results. Glass and dark pans can overbake the edges before the center is done. If you struggle with raw, gummy, or sunken centers, try switching to metal. Learn more about glass vs. metal pans here.
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Ingredients
- 5 tablespoons (71 grams) unsalted butter
- 1 1/4 cups (249 grams) granulated sugar
- 2 large eggs plus 1 egg yolk, cold
- 1 teaspoon vanilla extract
- 1/3 cup (74 grams) neutral oil (like vegetable or avocado)
- 3/4 cup (75 grams) Dutch-process cocoa powder
- 1 tablespoon (5 grams) black cocoa powder*
- 1/2 cup (63 grams) all-purpose flour, measured correctly
- 1 tablespoon cornstarch
- 1/2 teaspoon fine sea salt
- 1/2 cup (85 grams) semisweet chocolate chips
- 12 (136 grams) chocolate sandwich cookies, coarsely chopped and divided
Instructions
- Preheat the oven to 325°F. Line an 8 by 8-inch light-colored metal pan** with foil or parchment paper and spray with nonstick cooking spray.
- In a large microwave-safe bowl, melt the butter. Whisk in the sugar. Allow to cool until just warm, then whisk in the eggs and egg yolk, whisking vigorously for 1 minute. Whisk in the vanilla, oil, and cocoa powders.
- With a rubber spatula, stir in the flour, cornstarch, and salt until combined. Stir in the chocolate chips and half the Oreo pieces. Spread the brownie batter evenly into the prepared pan. Top with the remaining Oreo pieces, pressing in slightly.
- Bake for 30-32 minutes, or until the brownies are set and a cake tester inserted into the center has moist crumbs attached. Let cool completely to solidify before cutting and serving.
- Brownies can be stored in an airtight container at room temperature for up to 3 days. Brownies will be gooey when served warm, chewy when served at room temperature, and fudgy when served chilled.
Notes
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Photos by Joanie Simon.
Great recipe! I made it exactly as written and it is perfect! Fudgy brownies are a must in my household, but my go to recipe includes an unsweetened chocolate bar. I’ve always been skeptical of ones that use cocoa instead – worried they’d dry out quickly, but these are an amazing fudgy brownie! I’ll be making these again!
These were delicious!! Will make again and again.Thank you!
These are the best brownies I’ve ever made! The black cocoa really gives a deep chocolatey flavor. I had to bake them about 10 minutes longer than recipe. Would give them 10 stars if I could!
This recipe is phenomenal. I made them for my birthday because nothing store bought even comes close. WOW. I’m a dessert snob and I’m shocked every time I eat another piece. Haha
Best brownies I have ever made!!!!!!
These brownies were very good, definitely easy and loved the Oreos. I did have to cook them past the 32 minutes, as when I tested them still too too gooey in middle. Also, did not have black cocoa, but put a tablespoon espresso powder in place of black cocoa. Taking them to daughters house tonight for desert, but had to have a taste test first!
I just made these from your email last week. Omg!!!
I used Reese Oreos, so good!! Love that chocolate and peanut butter.
Amazing 😍
Thank you so much Tessa, you’re BEST!!
Hi! Would you be able to double the recipe and bake in a 9×13 pan? Thank you!
Yep! Just increase the bake time anywhere from 1-3 minutes. Hope you enjoy them! 🙂
Thank you!!
Your recipes are ALWAYS amazing!