Fudgy Oreo-Stuffed Brownies Recipe

These fudgy Oreo brownies are rich chocolate brownies studded with chocolate chips and chopped Oreo cookies. They bake up with a glossy, crinkly top and a dense, gooey center — simple to make and impossible to resist.

Top view of Oreo brownies.

Perfect for chocolate lovers, these brownies combine a classic fudgy base with the crunchy, creamy contrast of Oreo pieces. The recipe is straightforward and yields consistently fudgy results, making it an ideal choice when you want a homemade treat without fuss.

For more Oreo-inspired desserts, consider Oreo Donuts, Oreo Muffins, or Oreo Brookies as other ideas to try.

Why This Recipe Works

  • Fudgy texture — This brownie recipe emphasizes a dense, moist crumb rather than a cakey one, producing a rich, fudgy bite.
  • Oreo crunch — Chopped Oreos throughout the batter and extra pieces on top add texture and a classic cookies-and-cream flavor contrast.
  • Easy and reliable — With basic pantry ingredients and simple steps, these brownies are quicker than many layered desserts and far more satisfying than a boxed mix.
One oreo brownie on its side.

Ingredient Notes

A few ingredient details help ensure great results. For the full quantities, see the recipe section below.

  • Egg yolk — Adding an extra egg yolk enriches the batter and contributes to a fudgy, tender crumb.
  • Unsalted butter — Melt and cool the butter slightly before adding so it doesn’t scramble the eggs.
  • Oil — Neutral oils such as canola or vegetable work well; a mild olive oil is also acceptable.
  • Dark unsweetened cocoa powder — Dark cocoa gives deeper chocolate flavor. Regular cocoa can be used but will yield a slightly milder taste.
  • Cornstarch — A small amount of cornstarch softens the gluten and helps produce a fudgier, chewier texture.
  • Chocolate chips — Semisweet chips balance the cocoa bitterness. Avoid milk or white chocolate if you want to keep sweetness in check.

Step By Step Instructions

Follow these steps to make and bake the Oreo brownies.

STEP 1: Prepare the pan. Preheat the oven to 325°F (163°C). Spray a 9×9-inch pan with nonstick baking spray. For easy removal, line the bottom and two sides with parchment paper and lightly spray the parchment.

STEP 2: Combine dry ingredients. Sift or whisk together the all-purpose flour, dark cocoa powder, cornstarch, and salt to remove lumps and ensure even distribution.

Wet ingredients in a bowl.
Oreos on top of of brownie batter in a glass bowl.

STEP 3: Whip the eggs and sugar. Using a stand mixer or hand mixer with a whisk attachment, beat the large eggs, extra yolk, and granulated sugar on high for about 5 minutes until the mixture is thick, pale, and slightly aerated. This step helps form the signature crinkly top.

STEP 4: Add melted butter, oil, and vanilla. Fold in the cooled melted butter, oil, and vanilla on low speed to preserve the air you incorporated in the eggs.

STEP 5: Add dry ingredients, chocolate chips, and Oreos. Mix in the dry ingredients on low until just combined, then gently fold in semisweet chocolate chips and chopped Oreo pieces.

Brownie batter in a glass bowl.
Brownie batter in the pan.

STEP 6: Bake. Pour the batter into the prepared pan and press extra Oreo pieces on top. Bake for 45–55 minutes, until the edges are set and the center is slightly underbaked. A toothpick inserted near the center should come out with a few moist crumbs — if it comes out with wet batter, bake 5–10 minutes longer.

STEP 7: Cool completely. Let the brownies cool in the pan on a wire rack until fully set. They will finish cooking as they cool; cutting too soon may cause them to fall apart.

Expert Baking Tips

Take care when folding wet and dry ingredients into the beaten eggs. Adding ingredients too quickly or mixing too aggressively can deflate the egg mixture and reduce the crinkle on top. Use parchment in the pan and a light spray to prevent sticking. Serve slightly warm with a scoop of vanilla ice cream for an indulgent treat.

Stack of 3 brownies.

FAQ

Why did my brownies sink?

If your brownies sank in the middle, they were likely underbaked. You may have a very fudgy result. Return the pan to the oven and bake an additional 15–20 minutes, then allow to cool completely.

My brownies are very hard.

Overbaking causes dry, hard brownies. Aim for edges that are set and a center that’s slightly underdone when removing from the oven.

Can I make these brownies without eggs?

This version was not tested without eggs. Egg substitutes may change texture and rise; if you try one, note the differences and adjust as needed.

Can I bake these in an 8×8-inch pan?

Yes. Using an 8×8 pan will produce thicker brownies and may require a few extra minutes of baking.

Can I bake these in a 9×13-inch pan?

Yes. Double the recipe to fill a 9×13 pan and adjust baking time accordingly until the center is nearly set.

Storing and Freezing

Store cooled brownies in an airtight container at room temperature for 3–4 days. They are best slightly warm; the Oreo pieces will soften and lose some crunch over time.

Freezing

Freeze brownies in an airtight container for up to 30 days. Thaw at room temperature for about an hour before serving.

Two Oreo brownies on its side.

Other Brownie Recipes To Try

If you loved this recipe, please leave a star review and share a photo of your brownies on social media. Tag your photos with the recipe name so others can find inspiration.

Oreo Brownies

Fudgy brownies packed with semisweet chocolate chips and chopped Oreo cookies.

Yield & Time

Servings: 16 brownies • Prep: 20 mins • Cook: 45 mins • Total: ~1 hr 5 mins

Ingredients

  • 2 cups white granulated sugar
  • 3 large eggs
  • 1 egg yolk
  • 1/2 cup unsalted butter, melted and slightly cooled
  • 1/2 cup oil (canola or vegetable)
  • 1 tsp pure vanilla extract
  • 3/4 cup all-purpose flour
  • 1 cup dark unsweetened cocoa powder
  • 1 tbsp cornstarch
  • 1/2 tsp salt
  • 1 cup semisweet chocolate chips
  • 1 cup chopped Oreo pieces, plus extra for topping

Instructions

  1. Preheat oven to 325°F (163°C). Prepare a 9×9-inch pan with nonstick spray and line the bottom and two sides with parchment paper.
  2. Sift or whisk together flour, cocoa powder, cornstarch, and salt; set aside.
  3. Beat the eggs, egg yolk, and sugar on high for about 5 minutes until light and pale.
  4. With the mixer on low, add the melted butter, oil, and vanilla and combine gently.
  5. Mix in the dry ingredients on low until just combined. Fold in chocolate chips and chopped Oreos.
  6. Pour batter into the prepared pan. Scatter extra Oreo pieces on top.
  7. Bake 45–55 minutes until edges are set and center is slightly underbaked. Cool completely on a wire rack before slicing.

Notes

  • Measure flour by spooning into the cup and leveling or use a kitchen scale to avoid compacted flour, which can make brownies cakey.
  • At high altitudes, add an extra 1/2 tablespoon flour.
  • Wait until brownies are fully cool before cutting to get clean slices and the best chocolate flavor.

Nutrition (per brownie, approximate)

Calories: 302 kcal • Carbohydrates: 36 g • Protein: 2 g • Fat: 17 g • Saturated fat: 7 g • Sugar: 29 g