Best Oreo Brownies Recipe

Oreo brownies are rich, fudgy, and absolutely packed with those iconic chocolate sandwich cookies we all grew up loving. This recipe combines a from scratch brownie base with chunks of Oreos stirred right in, creating the ultimate chocolate on chocolate dessert that’s perfect for family gatherings, bake sales, or those nights when you just need something sweet and comforting.

Love More Recipes? Try My Fudgy Vegan Brownies or this Fudgy Football Brownies next.

Why You’ll Love This Recipe

• Pure nostalgia in every bite — Oreos and brownies together is the ultimate childhood favorite all grown up
• Incredibly fudgy texture — these aren’t cakey brownies, they’re rich, dense, and absolutely decadent
• Simple ingredients — no fancy pantry items needed, just basic baking staples and a package of Oreos
• Always a crowd-pleaser — I’ve never met anyone who could resist the combination of homemade brownies and Oreo cookies
• Easy enough for beginners — if you can stir and pour, you can make these brownies

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Ingredients You’ll Need

For the Brownie Batter:

• 1 cup unsalted butter (2 sticks), melted and slightly cooled — salted butter works too, just reduce the added salt
• 1½ cups granulated sugar
• 4 large eggs, room temperature — this helps them mix in smoothly
• 2 teaspoons vanilla extract — use the real stuff for best flavor
• ¾ cup unsweetened cocoa powder — Dutch-process or natural both work beautifully
• 1 cup all-purpose flour
• ½ teaspoon salt
• ½ teaspoon baking powder

For the Add-Ins & Topping:

• 12–15 Oreo cookies (regular or double-stuf), roughly chopped — I love double-stuf for extra creaminess
• Optional: additional Oreo cookies for layering or decoration — because more is more

Why These Ingredients Work

The melted butter is the secret to that ultra-fudgy texture we’re after. Unlike brownies made with oil, butter adds richness and depth of flavor that makes each bite feel luxurious.

The combination of cocoa powder and chocolate cookies creates layers of chocolate flavor without being overwhelming. Room temperature eggs blend seamlessly into the batter, creating a smooth, glossy mixture that bakes up perfectly.

The small amount of baking powder gives just a tiny lift without making the brownies cakey. And those Oreos? They add pockets of creamy sweetness and a delightful crunch that contrasts beautifully with the soft, dense brownie base.

Essential Tools and Equipment

• Large mixing bowl
• Whisk or wooden spoon
• 9×13-inch baking pan
• Parchment paper or cooking spray
• Measuring cups and spoons
• Knife for chopping Oreos
• Toothpick for testing doneness
• Cooling rack (optional but helpful)

Step-by-Step Instructions

Step 1: Preheat the Oven

Preheat your oven to 350°F (175°C). Grease a 9×13-inch baking pan generously with butter or cooking spray, or line it with parchment paper for easy removal later.

Step 2: Make the Brownie Batter

In a large mixing bowl, whisk together the melted butter and granulated sugar until the mixture is smooth and glossy. This should take about a minute of good whisking.

Step 3: Add Eggs and Vanilla

Add the eggs one at a time, mixing well after each addition. This helps create a nice emulsion and keeps your batter smooth. After all four eggs are in, stir in the vanilla extract.

Step 4: Mix in Dry Ingredients

Add the cocoa powder, flour, salt, and baking powder all at once. Using a wooden spoon or spatula, stir until just combined and no streaks of flour remain.

Don’t overmix here — we want tender brownies, not tough ones. A few small lumps are perfectly fine.

Step 5: Add Oreos

Fold the roughly chopped Oreo cookies into the brownie batter. I like to chop them into quarters or smaller pieces so you get cookie bits in every bite.

Save a few extra cookies if you want to press them on top before baking — it makes for a beautiful presentation.

Step 6: Bake

Pour the batter into your prepared pan and spread it evenly with a spatula. If you’re adding whole or halved Oreos on top, gently press them into the surface now.

Bake for 25–30 minutes, until the edges are set and pulling away slightly from the pan, and a toothpick inserted near the center comes out with a few moist crumbs clinging to it. Remember, we want fudgy, not dry, so don’t overbake.

Step 7: Cool and Serve

This is the hardest part — waiting! Allow the brownies to cool completely in the pan before slicing.

I know it’s tempting to dig in right away, but cooling helps them set up properly so you get clean, beautiful squares instead of a gooey mess. Once cooled, slice into 12–16 squares.

You Must Know

The single most important thing about making perfect Oreo brownies is not overbaking them. Because we’re going for fudgy, you want to pull them from the oven when they still look slightly underdone in the center.

They’ll continue cooking as they cool, and this is what gives you that perfect, almost brownie-like texture. If you wait until a toothpick comes out completely clean, you’ve gone too far and your brownies will be dry and cakey instead of rich and fudgy.

Personal Secret: I always let my melted butter cool for about 5 minutes before adding it to the sugar. If it’s too hot, it can start cooking the eggs when you add them, which creates a grainy texture instead of smooth and silky.

Pro Tips & Cooking Hacks

• Use room temperature eggs — they incorporate much more smoothly into the batter and create a better texture
• Don’t skip the parchment paper — it makes removal so much easier and you’ll get perfect edge pieces every time
• Chop Oreos roughly — don’t pulverize them; you want visible chunks for texture and visual appeal
• Try the “knock test” — gently shake the pan at 25 minutes; if the center jiggles like Jello, they need more time; if it barely moves, they’re perfect
• Cool completely before cutting — I mean it! Warm brownies will crumble and fall apart; cooled brownies slice like a dream
• Use a plastic knife for cleaner cuts — sounds odd, but plastic knives don’t drag through fudgy brownies the way metal ones do
• Avoid overmixing after adding flour — this develops gluten and makes brownies tough instead of tender

Flavor Variations & Suggestions

If you want to switch things up, try using different Oreo flavors like mint, peanut butter, or birthday cake for a fun twist. You can also add a handful of chocolate chips along with the Oreos for extra chocolate intensity.

For a salted treat, sprinkle flaky sea salt over the top right after they come out of the oven. White chocolate chips folded into the batter create a beautiful contrast against the dark chocolate base.

If you’re feeling adventurous, swirl a few tablespoons of peanut butter or Nutella into the top of the batter before baking for marbled brownies. And for the ultimate indulgence, sandwich a layer of Oreo cookies in the middle by pouring half the batter in the pan, placing whole cookies on top, then covering with the remaining batter.

Make-Ahead Options

These brownies are actually better the next day after the flavors have had time to meld together, which makes them perfect for making ahead. You can bake them up to two days in advance and store them tightly covered at room temperature.

If you want to prep even further ahead, the batter can be mixed and poured into the pan, then covered and refrigerated for up to 24 hours before baking. Just add an extra 5 minutes to the baking time since it’s going in cold.

For longer storage, these brownies freeze beautifully for up to three months. Let them cool completely, cut into squares, then wrap individually in plastic wrap and store in a freezer-safe container. Thaw at room temperature for an hour or two before serving, or warm individual pieces in the microwave for 15–20 seconds for that fresh-from-the-oven experience.

What to Serve With Oreo Brownies

These brownies are rich enough to stand on their own, but they’re absolutely heavenly with a big scoop of vanilla ice cream melting over the top. A tall glass of cold milk is the classic pairing for a reason, and it cuts through the richness beautifully.

For a more grown-up dessert, serve them with freshly whipped cream and a drizzle of hot fudge sauce. Coffee is another wonderful companion, especially a nice dark roast that complements the chocolate.

If you’re serving these at a party, they pair beautifully with fresh berries on the side for a little brightness. And if you really want to go over the top, make brownie sundaes with the brownies as the base, topped with ice cream, whipped cream, chocolate sauce, and a cherry on top.

Allergy Information

These Oreo brownies contain several common allergens including wheat (gluten), eggs, dairy (butter and in the Oreos), and soy (in the Oreos).

For a gluten-free version, you can substitute the all-purpose flour with a 1-to-1 gluten-free baking flour and use gluten-free Oreos or another gluten-free chocolate sandwich cookie. Dairy-free adaptations are trickier since butter provides so much flavor, but you can try using coconut oil or a good-quality vegan butter substitute, plus dairy-free chocolate sandwich cookies.

For egg-free brownies, flax eggs or commercial egg replacer can work, though the texture will be slightly different. Always check Oreo packaging for current allergen information, as formulations can change.

Storage & Reheating

Store leftover brownies in an airtight container at room temperature for up to 4 days. If your kitchen is very warm, you can refrigerate them for up to a week, though I find the texture is best at room temperature.

To reheat, warm individual brownies in the microwave for 10–15 seconds to get that fresh-baked feel. You can also warm them in a 300°F oven for about 5 minutes if you’re heating several at once.

If the brownies seem to be drying out after a few days, pop them in the microwave with a damp paper towel draped over the top for extra moisture. For frozen brownies, simply thaw at room temperature or warm from frozen in the microwave for 30–45 seconds.

Questions I Get Asked A Lot

Can I use a boxed brownie mix instead of making from scratch?

You absolutely can! Use a standard box mix prepared according to package directions, then fold in the chopped Oreos before baking. It won’t be quite as fudgy as this from-scratch version, but it’ll still be delicious and save you some time.

My brownies turned out cakey instead of fudgy — what happened?

This usually means they were overbaked. The toothpick should come out with moist crumbs, not completely clean. Also, make sure you’re measuring flour correctly by spooning it into the measuring cup and leveling it off, not scooping directly from the bag, which can pack in too much flour.

Can I make these in an 8×8 or 9×9 pan instead?

Yes, but you’ll need to adjust the baking time. The brownies will be thicker, so add about 10–15 minutes to the baking time and keep a close eye on them. Start checking around the 35-minute mark.

Should I use regular or double-stuf Oreos?

Either works beautifully! Double-stuf gives you more of that creamy filling in every bite, which I personally love. Regular Oreos have a slightly better cookie-to-cream ratio if you prefer more crunch. It’s totally a matter of preference.

How do I get clean cuts without the brownies falling apart?

The key is patience — let them cool completely first. Then use a sharp knife (or even a plastic knife, which works surprisingly well), and wipe the blade clean between each cut. You can also chill the brownies in the fridge for an hour before cutting for extra-clean edges.

💬 Tried this recipe? Leave a comment and rating below! I’d love to hear how your Oreo brownies turned out, and if you tried any fun variations.