Name: Halloween Oreo Stuffed Brownies Recipe
Prep time: 15 min
Cook time: 30 min
Total time: 45 min
Cuisine: American
Ingredients: 2/3 cup butter; 1/4 cup vegetable oil; 1 cup granulated sugar; 1/3 cup brown sugar; 2/3 cup cocoa powder; 2 cold eggs; 1 tsp vanilla extract; 1/2 tsp salt; 1/2 cup all purpose flour; 15 Oreos whole for stuffing; 5 Oreos crushed for topping

Jump to Recipe· 4.6 from 16 reviews

If you’re anything like me, Halloween means one thing: treats that are as fun to make as they are to eat. That’s why I’m super excited to share this Halloween Oreo Stuffed Brownies Recipe with you. Imagine rich, fudgy brownies with a gooey Oreo surprise hidden inside—each bite better than the last. They’re perfect for parties, a cozy night in, or just treating yourself because, hey, you deserve it. Keep reading and I’ll walk you through every step so you nail these festive delights without a hitch.

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Why This Recipe Works

Fudgy Brownie Base: The mix of butter and oil keeps these brownies super moist and tender without being greasy.
Oreo Surprise: Stuffing whole Oreos inside creates a fun contrast of crunchy cookie and soft brownie that’s irresistibly tasty.
Simple Ingredients: You won’t need anything fancy—just pantry staples you probably already have with a few Oreos on hand.
Eye-Catching Results: The crushed Oreos on top add texture and extra cookie goodness, making these brownies look as good as they taste.

Halloween Oreo Stuffed Brownies, Oreo Stuffed Brownies, Halloween Brownie Recipes, Fudgy Brownies with Oreos, Festive Halloween Treats - The image shows several square-shaped brownies with three visible layers. The bottom and top layers are dark brown, soft, and textured like rich chocolate brownie. In between, there is a bright orange layer matching the color of the filling of orange cream cookies. The top layer is decorated with broken pieces of black and orange sandwich cookies, scattered unevenly across the surface. The brownies are arranged closely on a white marbled texture. The focus is sharp on the center brownies, showing glossy texture and small cracks on the top layer. Photo taken with an iphone --ar 2:3 --v 7

Ingredients & Why They Work

The magic here is in the balance—rich cocoa, the right amount of sugar, and a little vanilla warmth all come together to create a chocolatey base that complements the Oreos without overpowering them. I always recommend using good-quality cocoa powder because it really amps up that deep chocolate flavor.

Halloween Oreo Stuffed Brownies, Oreo Stuffed Brownies, Halloween Brownie Recipes, Fudgy Brownies with Oreos, Festive Halloween Treats - Flat lay of rich brown cocoa powder scattered in a small pile, smooth dark chocolate Oreos whole and crushed to show their creamy white centers, two fresh brown-speckled eggs with glossy shells, soft golden brown cubes of butter, shiny light amber brown sugar crystals next to deep reddish-brown packed brown sugar, fine pale off-white all-purpose flour in a neat mound, and a small glass bottle of golden vanilla extract with a warm amber hue, all beautifully arranged with natural shadows and textures highlighted, placed on white marbled surface, photo taken with an iphone --ar 2:3 --v 7

Butter: Adds richness and helps create that classic brownie texture I love.
Vegetable Oil: Keeps the brownies soft and moist—too much butter alone can make brownies cakey, so this combo works well.
Granulated Sugar: Gives sweetness and helps with that shiny, crackly top.
Brown Sugar: Adds a subtle molasses note for extra depth and chewiness.
Cocoa Powder: I always use unsweetened for intense chocolate flavor without extra sweetness.
Eggs: Cold eggs help bind everything and add structure without drying out the batter.
Vanilla Extract: A small splash goes a long way to elevate the chocolate flavor.
Salt: Balances sweetness and enhances everything else—it’s a must!
All Purpose Flour: Just enough to hold it all together; don’t overmix to keep those fudgy vibes.
Oreos: Whole Oreos stuffed inside for surprise and crushed Oreos on top for crunch and festive flair.

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Note: You’ll find the complete list of ingredients, along with their exact measurements, in the printable recipe card at the bottom of this post.

Tweak to Your Taste

One of the best things about this Halloween Oreo Stuffed Brownies Recipe is how easy it is to customize. I often mess around with adding a pinch of cinnamon or swapping the Oreos for a different flavored cookie—trust me, it’s a delicious experiment!

Butter Variation: I’ve tried using browned butter instead of regular butter once, which gave a nutty, caramel-like twist that’s pretty awesome.
Gluten-Free Option: Swap the all-purpose flour for a gluten-free blend and bake a little longer—results are excellent for gluten-sensitive friends.
Extra Chocolate: Adding chocolate chips on top before baking gives an ooey-gooey topping that’s next level.
Spooky Colors: Mix some orange or purple food coloring into the batter or frosting (if you add any) to really jazz up your Halloween spread.

Step-by-Step: How I Make Halloween Oreo Stuffed Brownies Recipe

Step 1: Prep Like a Pro

First things first—preheat your oven to 350°F and line an 8×8 inch baking pan with parchment paper. Trust me, parchment makes removing these brownies an absolute breeze and keeps the bottoms from sticking in a way that baking spray just can’t match.

Step 2: Melt and Mix the Sugars and Fats

In a microwave-safe bowl, combine the butter, vegetable oil, granulated sugar, and brown sugar. Microwave in 30-second bursts, stirring each time, until the mixture is fully melted and mixed—about 2 minutes total. Stir vigorously after the last burst to melt the sugars completely. I find using a hand mixer here helps create a silky smooth batter.

Step 3: Add the Eggs and Vanilla

Next, whisk in the eggs one at a time, making sure each is fully incorporated before adding the next. Then add the vanilla extract. You want the batter to pull away slightly from the sides of the bowl—this is a good sign it’s ready for the next step.

Step 4: Fold in Dry Ingredients

Sift together the cocoa powder, flour, and salt, then gently fold into your wet mixture just until no flour pockets remain. Overmixing will toughen your brownies, so take care here and fold carefully.

Step 5: Layer and Fill with Oreos

Pour half of the brownie batter into your lined pan and spread it evenly. Now, this is the best part: place the Oreos in a neat layer right in the center of the batter—don’t worry if they overlap a bit, they’ll melt into a perfect fudgy layer. Then spoon on the remaining batter to cover the cookies completely.

Step 6: Add Oreo Crunch on Top and Bake

Crush the last 5 Oreos coarsely and sprinkle them over the top of your brownies—it adds a gorgeous texture and a hint of crunch. Bake in the preheated oven for 30 minutes. Keep an eye on them near the end; a toothpick inserted should come out with a few moist crumbs but no wet batter.

Step 7: Cool Completely Before Cutting

This step is crucial: let your brownies cool fully on a wire rack before slicing. If you try to cut them while warm, they won’t hold their shape well, and the Oreo filling might get messy. Once cooled, you’ll get those beautiful, clean squares with a crinkly top that scream “eat me!”

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Pro Tips for Making Halloween Oreo Stuffed Brownies Recipe

Use Cold Eggs: I learned that adding cold eggs helps the batter hold together better, preventing greasy textures.
Don’t Skip the Parchment: Removing brownies from the pan is so much easier and you avoid that annoying stuck-bottom problem.
Watch Your Bake Time: I once overbaked mine and ended up with dry brownies—checking at 28 minutes gives you a nice fudgy center.
Crush Oreos by Hand: Using your fingers to crumble Oreos on top keeps pieces uneven and gives better texture than pulsing in a food processor.

How to Serve Halloween Oreo Stuffed Brownies Recipe

Garnishes

I usually serve these brownies with a light dusting of powdered sugar for a ghostly effect, but for Halloween parties, I love using edible candy eyeballs or a drizzle of orange or purple icing to amp up the spooky vibes. Whipped cream or a scoop of vanilla ice cream on the side never goes amiss either.

Side Dishes

Pair these brownies with a warm cup of pumpkin spice latte or a cold glass of milk to balance the rich chocolate. If you’re hosting a gathering, some fresh fruit or a light salad helps cut through the sweetness.

Creative Ways to Present

For Halloween, I love stacking the brownies on a tiered tray with little spider web decorations woven around the edges. You can also cut them into fun shapes using cookie cutters—like bats or pumpkins—and serve them on brightly colored plates to impress your guests.

Make Ahead and Storage

Storing Leftovers

I store any leftover brownies in an airtight container at room temperature for up to 3 days. Make sure they’re completely cooled before sealing to avoid soggy brownies. If your kitchen tends to be warm, the fridge is a safer bet.

Freezing

These brownies freeze beautifully. Just wrap them tightly in plastic wrap and then foil to preserve freshness. When I pull them out, I thaw at room temp for a couple of hours, and they taste almost as good as freshly baked.

Reheating

To reheat, I pop a brownie in the microwave for about 15 seconds—this warms the Oreo layer inside and makes it gooey again without drying the edges too much. If you like, add a tiny dab of butter on top before microwaving for an extra indulgent touch.

FAQs

Can I use other cookies instead of Oreos in this Halloween Oreo Stuffed Brownies Recipe?

Absolutely! While Oreos give a classic chocolate-vanilla combo that complements the brownies perfectly, you can experiment with other sandwich cookies like mint Oreos, peanut butter-filled cookies, or even thin cookies like Biscoff for a twist. Just keep the size and texture in mind so your brownies bake evenly.
How do I ensure the Oreos don’t get soggy inside the brownies?

The key is covering the Oreos with enough batter on both sides. The brownie batter acts like a protective layer while baking. Also, don’t overbake your brownies—pull them out when they’re just set but still fudgy to keep that Oreo layer delightfully crisp.
Can I double this Halloween Oreo Stuffed Brownies Recipe for a larger pan?

Yes! Just double the ingredients and bake in a 9×13 inch pan, but keep an eye on baking time—it might take 5-10 minutes longer. Use a toothpick test to ensure doneness without drying out the brownies.

Final Thoughts

I don’t say this lightly, but this Halloween Oreo Stuffed Brownies Recipe is my new go-to whenever I want to impress friends or just indulge in that perfect chocolate-oreo combo. The fudgy texture, the Oreo surprise in the middle, and the little crunch on top all come together in a way that hits all the right notes. If you try it, I promise you’ll be smitten—and hey, that’s what good baking is all about: sharing joy bite after bite. So grab those Oreos and get baking—you won’t regret it!