Halloween Oreo Cookies (Giant Black Cocoa Oreo Cookies)

If you could take an Oreo, turn it into a giant, soft-baked, fudgy cookie, and stuff it with even more Oreos, you’d have these Halloween Oreo cookies. And honestly? They might be the best Halloween cookie you’ll make this year.

These are big, thick, bakery-style cookies with a deep, almost jet-black color and that classic Oreo flavor in every bite. Inside and on top, you’ll find chunky pieces of Halloween Oreos, the ones with the bright orange filling. That black-and-orange combination screams Halloween, and you didn’t add a single drop of food coloring.

The secret? Black cocoa powder. It’s what gives store-bought Oreo cookies their signature color and flavor. Baked into a rich, chewy cookie dough, it turns an everyday chocolate cookie into something spooky and seriously addictive.

Make them giant for a showstopping party treat, or regular-sized for lunchboxes and treat bags. Either way, they disappear fast.

If you’re an Oreo fan, you’ll also want to try my Oreo S’mores Cookies. They’re gooey, crunchy, and impossible to resist.

Why You’ll Love These Halloween Oreo Cookies

• Real Oreo flavor. Black cocoa tastes just like the chocolate wafer in an Oreo.
• Dramatic black color, no dye. The cocoa does all the work.
• Loaded with Oreos. Chunks are mixed into the dough and pressed on top.
• Big, thick, and fudgy. Soft in the center with slightly firm edges, like a bakery cookie.
• Simple drop cookies. No rolling, cutting, or decorating required.
• Two sizes. Make 9 giant cookies or about 18 regular ones.
• Make-ahead friendly. The dough freezes beautifully.

What Is Black Cocoa Powder?

Black cocoa is the star of this recipe, so it’s worth a quick explanation.

All cocoa powder starts as ground cocoa beans. Regular “natural” cocoa is light brown and slightly acidic. Dutch-process cocoa is treated with an alkaline solution that mellows the acidity and darkens the color. Black cocoa is the most heavily alkalized of all. It’s processed so intensely that it turns almost completely black.

That heavy processing gives black cocoa a few special qualities:

• A near-black color, which is what makes these cookies look so dramatic.
• A mild, smooth flavor with less bitterness than regular cocoa.
• That unmistakable Oreo taste. Black cocoa is what gives the famous Oreo wafer its flavor and color.

Can’t find black cocoa? Use Dutch-process cocoa instead. The cookies will be dark brown rather than black, but still rich and delicious. You could also try a 50/50 mix of black and Dutch-process cocoa for a slightly deeper chocolate flavor.

Ingredients You’ll Need

For the cookie dough:

• All-purpose flour (1⅓ cups / 166 g): Spoon and level it, or weigh it for the best results.
• Black cocoa powder (½ cup / 50 g): The key to the Oreo flavor and color.
• Salt (1 teaspoon kosher salt or ½ teaspoon table salt): Balances the sweetness and boosts the chocolate.
• Baking soda (½ teaspoon): Helps the cookies rise and spread just enough. Baking soda also helps them brown and develop chewy texture.
• Unsalted butter (6 oz / 1½ sticks / 170 g): At room temperature.
• Granulated sugar (½ cup / 100 g): Helps create crisp edges.
• Dark brown sugar (½ cup packed / 100 g): Adds moisture, chewiness, and a deep caramel note.
• Vanilla extract (1 teaspoon): Or vanilla bean paste.
• Large egg (1): At room temperature.

For the mix-ins:

• Halloween Oreos (10–12 cookies, coarsely chopped): Plus extra chopped Oreos for topping.

Ingredient Swaps

• Salted butter: You can use it, but cut the added salt by ¼ teaspoon.
• Light brown sugar: It works in place of dark brown sugar. Your cookies will be slightly less rich and chewy, but still delicious.
• Regular Oreos: Use them if you can’t find the Halloween version. You’ll lose the orange color, but not the flavor.
• Other Oreo flavors: Golden Oreos, mint Oreos, or Double Stuf all work well too.

How to Make Halloween Oreo Cookies

Step 1: Mix the dry ingredients

In a medium bowl, sift or whisk together the flour, black cocoa powder, salt, and baking soda until evenly combined. Sifting is a good idea here, since cocoa powder tends to clump. Set the bowl aside.

Step 2: Cream the butter

In the bowl of a stand mixer fitted with the paddle attachment, or a large bowl with a hand mixer, beat the softened butter on its own for 2–3 minutes, until it’s very light and creamy.

Step 3: Add the sugars

Scrape down the sides of the bowl. Add the granulated sugar and dark brown sugar, then beat on medium-high for another 2–3 minutes, until the mixture is light and fluffy. Scrape the bowl as needed so everything is evenly combined.

Step 4: Add the egg and vanilla

Add the egg and vanilla and mix until fully incorporated.

Step 5: Add the dry ingredients

Add the flour mixture and mix on low speed just until combined. Stop as soon as you no longer see dry flour. Overmixing makes cookies tough.

The dough will be very thick and fudgy. That’s exactly right.

Step 6: Fold in the Oreos

Use a spatula to gently fold in the chopped Halloween Oreos.

Step 7: Scoop the dough

Line a baking sheet with parchment paper and scoop the dough into balls:

• Giant cookies: ¼ cup (4 tablespoons) of dough per cookie, for about 9 cookies.
• Regular cookies: 2 tablespoons of dough per cookie, for about 18 cookies.

You can place the balls close together for now, since you’re only chilling them, not baking yet. An ice cream scoop makes this quick and gives you even-sized cookies.

Gently press extra chopped Oreo pieces onto the top of each dough ball. This is what gives the baked cookies that bakery-perfect look, with big Oreo chunks right on top.

Step 8: Chill

Loosely cover the tray with plastic wrap and refrigerate for at least 30 minutes.

You can also chill the whole bowl of dough before scooping. But chilled dough is harder to scoop, and the toppings won’t stick as easily, so scooping first is easier.

Step 9: Preheat the oven

While the dough chills, preheat your oven to 325°F (160°C), or 150°C fan. That’s a lower temperature than most cookie recipes use. It lets these thick cookies bake through gently without burning the bottoms or drying out the edges.

Step 10: Bake

Line a baking sheet with parchment paper or a silicone mat. Arrange the chilled dough balls with plenty of space between them: 2–3 inches (5–8 cm) for regular cookies, and up to 4 inches (10 cm) for giant ones.

Bake one sheet at a time on the middle rack:

• Regular cookies: 10–12 minutes
• Giant cookies: 11–15 minutes

The cookies are done when the edges are firm but the centers still look soft and slightly underbaked.

Step 11: Cool

Let the cookies cool on the baking sheet for 10–15 minutes before moving them to a wire rack. They’ll be very soft straight from the oven, but they firm up as they cool.

How to Make Perfectly Round Cookies

Here’s a fun trick bakeries use for picture-perfect cookies. As soon as the cookies come out of the oven, while they’re still hot and soft, place a round cookie cutter or a heat-safe glass slightly larger than the cookie over each one. Gently swirl it around in small circles. The cutter nudges the edges inward, giving you a perfectly round cookie with a smooth edge.

It takes about 5 seconds per cookie, and your Halloween dessert table will look professionally styled.

Tips for the Best Halloween Oreo Cookies

1. Use room-temperature ingredients. Soft butter and a room-temperature egg mix together smoothly and trap air for a better texture.
2. Measure the flour correctly. Fluff the flour, spoon it into the cup, and level it with a knife. Scooping directly from the bag packs the flour down and leads to dry, cakey cookies. A kitchen scale (166 g) is the most accurate.
3. Don’t skip the chill. Chilled dough spreads less, so you get thick, fudgy cookies.
4. Chop the Oreos coarsely. Big chunks look and taste better than fine crumbs.
5. Press extra Oreos on top before chilling for bakery-style cookies.
6. Bake one sheet at a time on the middle rack for even results.
7. Underbake slightly. Take them out while the centers still look soft.
8. Let them cool on the pan. Moving them too soon can make them break.

Troubleshooting

My cookies spread too much. The butter was likely too soft or the dough wasn’t chilled long enough. Chill the scooped dough for longer, up to a few hours.

My cookies are dry and cakey. Too much flour or too much baking time. Weigh the flour, and pull the cookies while the centers still look soft.

The cookies didn’t spread at all. The dough may have been too cold, or there’s too much flour. Let very cold dough sit at room temperature for 10 minutes before baking.

I can’t tell if they’re done. Dark cookies are tricky since you can’t judge by color. Look for firm, set edges and a soft, slightly puffy center.

Fun Variations

• Add white chocolate chips. They add sweetness and gorgeous contrast against the black dough.
• Stuffed cookies: Press a whole Oreo into the center of each giant dough ball and wrap the dough around it.
• Candy eyes: Press candy eyeballs into the warm cookies for monster cookies.
• Halloween sprinkles: Add orange and purple sprinkles on top before baking.
• Christmas version: Use red-filled holiday Oreos and add crushed peppermint.

How to Store Halloween Oreo Cookies

Room temperature: Keep cooled cookies in an airtight container for up to 5 days.

Freeze baked cookies: Freeze cooled cookies in an airtight container or freezer bag for up to 2 months. Thaw at room temperature.

Freeze the dough: Scoop the dough into balls, add the Oreo toppings, and freeze them on a baking sheet until solid. Transfer to a zip-top bag and freeze for up to 3 months. Bake straight from frozen, adding a few extra minutes to the baking time. It’s perfect for fresh cookies whenever you want them.

More Halloween Treats to Try

Building a spooky dessert table? These pair perfectly with your Oreo cookies:

• My double chocolate Halloween Cookies, loaded with Halloween M&Ms and candy eyes.
• Black Cocoa Crinkle Cookies, with dramatic purple and orange sugar coatings.
• Monster Eye Crinkle Cookies, the easy 5-ingredient cake mix monsters.

And if you love the Oreo flavor all year round, my Cookies and Cream Cookies are a must-bake.

Frequently Asked Questions

Where can I buy black cocoa powder?
It’s widely available online and in specialty baking shops. If you can’t find it, Dutch-process cocoa works as a substitute.

Do the cookies taste like Oreos?
Yes! Black cocoa gives them that classic Oreo wafer flavor, and the chopped Oreos add even more.

Can I use regular Oreos?
Absolutely. Regular Oreos taste just as good. You’ll just miss the orange Halloween color.

Why bake at 325°F instead of 350°F?
The lower temperature lets these thick cookies bake evenly all the way through without over-browning the bottoms or drying out the edges.

How many cookies does this recipe make?
About 9 giant cookies or 18 regular-sized cookies. The recipe halves or doubles easily.

Can I make the dough ahead?
Yes. Refrigerate the scooped dough, covered, for up to 2 days, or freeze it for up to 3 months.

Do I have to chill the dough?
Chilling is strongly recommended. Without it, the cookies spread more and turn out thinner.

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