Fudgy Oreo Brownies (Loaded with Cookies!)

ByElle Rivers

These rich, fudgy Oreo brownies are packed with chocolate sandwich cookies in every bite. The dense brownie base contrasts perfectly with chunks of Oreos throughout, creating the ultimate crowd-pleasing dessert. Ready in just 40 minutes with simple pantry ingredients.

Why This Recipe Works

  • Ultra-fudgy texture with crispy cookie crunch
  • No mixer needed, one bowl method
  • Feeds a crowd with minimal effort
  • Uses regular Oreos, no specialty ingredients
Oreo Brownies
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Oreo Brownies

Course: DessertDifficulty: Easy
Servings

16

brownies
Prep Time

15

minutes
Cook Time

35

minutes
Total Time

50

minutes

Ingredients

  • For the Brownie Base:

  • 1 cup (2 sticks) unsalted butter, melted

  • 1 cup granulated sugar

  • 1 cup light brown sugar, packed

  • 4 large eggs, room temperature

  • 2 teaspoons vanilla extract

  • 1 cup all-purpose flour

  • ¾ cup unsweetened cocoa powder

  • ½ teaspoon salt

  • 20 Oreo cookies, roughly chopped (about 2 cups)

  • 8 whole Oreos for topping

Directions

  • Preheat your oven to 350°F (175°C). Line a 9×13-inch baking pan with parchment paper, leaving overhang on the sides for easy removal.
  • Whisk melted butter with both sugars in a large bowl until well combined and slightly glossy, about 1 minute.
  • Add eggs one at a time, whisking after each addition. Stir in vanilla extract until the mixture looks smooth and emulsified.
  • Sift cocoa powder, flour, and salt directly into the wet ingredients. Fold gently with a spatula until just combined—don’t overmix or brownies will be cakey.
  • Fold in the chopped Oreos, reserving a few pieces for topping. The batter will be thick and glossy.
  • Spread batter evenly into prepared pan. Press whole Oreos and reserved chunks on top, spacing them evenly.
  • Bake for 25-28 minutes until a toothpick inserted in the center comes out with moist crumbs (not wet batter). The edges should look set but the center will seem slightly underdone—this ensures fudgy brownies.
  • Cool completely in the pan on a wire rack, about 2 hours. Use parchment overhang to lift brownies out before cutting into 16 squares.

🎯 Pro Tips & Substitutions

Yes! These brownies actually taste better the next day as the flavors meld together. Bake and cool completely, then cover tightly with plastic wrap and store at room temperature for up to 3 days. You can also freeze unfrosted brownies for up to 3 months—wrap individual squares in plastic, then place in a freezer bag. Thaw at room temperature for 2 hours before serving.

Regular Oreos work perfectly and provide the classic flavor everyone loves. You can experiment with Double Stuf for extra creme filling, or flavored varieties like mint, peanut butter, or red velvet. Avoid thin Oreos as they disappear into the batter. For best texture, use Oreos straight from a fresh package—stale cookies won’t provide that satisfying crunch.

This usually happens from overmixing the batter after adding the flour, which develops gluten and creates a cake-like texture. Mix only until you can’t see streaks of flour. Another cause is overbaking—remember that the toothpick should have moist crumbs, not come out clean. Your brownies will continue cooking slightly as they cool in the hot pan.

An 8×8-inch pan will give you thicker brownies—increase baking time to 32-35 minutes and check for doneness. A 9×9-inch pan needs about 28-30 minutes. For thinner brownies, use a larger sheet pan and reduce time to 18-20 minutes, watching carefully. The thicker the brownies, the fudgier they’ll be.

Store brownies in an airtight container at room temperature for up to 4 days. Layer them with parchment paper to prevent sticking. For longer storage, refrigerate for up to a week—bring to room temperature before serving for best texture. Avoid storing in the fridge unless necessary, as cold temperatures can dry them out.

❓ Frequently Asked Questions

Yes, substitute the all-purpose flour with a 1:1 gluten-free baking flour blend that contains xanthan gum. Bob’s Red Mill and King Arthur brands work well. Make sure your Oreos are gluten-free too—several brands make gluten-free chocolate sandwich cookies. The texture may be slightly more delicate but still delicious.

While not absolutely necessary, parchment paper makes removing and cutting brownies much cleaner. If you don’t have it, grease the pan thoroughly with butter and dust with cocoa powder. You’ll need to cut the brownies directly in the pan and remove them with a spatula.

These brownies are rich enough to stand alone, but a scoop of vanilla ice cream takes them over the top. A drizzle of hot fudge sauce or caramel adds extra decadence. For parties, serve with fresh berries and whipped cream to balance the richness.

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