Spooky Halloween Oreo Brownies

ByBrittany
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These Halloween Oreo brownies are the sweetest way to bring spooky fun to your dessert table! This Oreo brownie recipe has layers of rich, fudgy brownies with Halloween Oreo cookies baked in the center for a surprise crunch in every bite. They’re simple, festive, and guaranteed to disappear fast—making them the perfect Halloween treat to share.

A close-up of a fudgy brownie with orange and green creme sandwich cookie pieces inside and on top, with a bite taken out. Another brownie is in the background on a plate.

WHY YOU’LL LOVE THESE HALLOWEEN BROWNIES

  • Easy & Stress-Free: Starts with a box brownie mix, so no measuring flour, sugar, or leavening agents.
  • Ultra-Fudgy: Rich and chocolatey in every bite.
  • Festive & Fun: Whole Halloween Oreos baked in the center adds a playful, spooky surprise.
  • Kid-Friendly: Perfect for little hands to help assemble and decorate.
  • Perfect for Halloween: Cute, colorful, and totally scream “Halloween!” without extra effort.
  • Crowd-Pleaser: Delicious enough to impress kids and adults alike.
A close-up of a chocolate brownie, decorated with Oreo cookies featuring colorful cream filling peeking through the cracks.

HALLOWEEN OREO BROWNIE INGREDIENTS

  • Brownie Mix – The fudgy chocolate base that makes these treats irresistible.
  • Melted Butter – Keeps the brownies rich, soft, and perfectly tender.
  • Egg + Egg Yolk – Adds extra fudgy goodness and structure.
  • Water – Helps bring the batter together just right.
  • Chocolate Chips – Adds texture & little bites of chocolate in every bite.
  • Halloween Oreos – Whole cookies with spooky orange & green cream centers baked right in the middle.
Halloween Oreo Brownie Ingredients

HOW TO MAKE SPOOKY OREO BROWNIES

  1. Preheat & Prep: Start by preheating the oven to 350°F. Prepare a parchment lined 8×8 inch square pan with baking spray or a homemade pan release. Let the parchment hang over the edges—instant handles!
  2. Melt Butter: In a microwave-safe bowl, microwave the butter at 15-30 second intervals until completely melted. Set aside.
  3. Combine the Ingredients: In a large mixing bowl, add the brownie mix, egg, egg yolk, melted butter, and water. Stir until the batter is almost combined—don’t overmix.
  4. Chocolate Chips: Add the chocolate chips to the brownie batter and gently fold them in with a spatula until evenly distributed.
  5. Layering: Spread half of the brownie batter evenly into the prepared pan. Arrange the Halloween Oreos in a single layer over the batter. Carefully spread the remaining brownie batter over the Oreos, making sure they’re fully covered.
  6. Oreo Topping: Arrange whole and halved Oreos on top of the batter, pressing them in slightly for decoration.
  7. Bake: Bake for 40–45 minutes, or until a toothpick inserted into the center comes out mostly clean with just a few moist crumbs. We don’t want a completely clean toothpick, we want these fudgy!
A glass bowl containing brownie mix, one egg, egg yolk, melted butter, and water on a marble countertop.
A glass bowl filled with chocolate brownie batter and sprinkled with chocolate chips, with a spatula resting inside, on a marbled surface.
A square baking dish lined with parchment paper, filled with smooth chocolate brownie batter and a spatula resting on top.
A square pan filled with chocolate brownies topped with Halloween-themed Oreos featuring green and orange designs.
A square baking dish filled with a thick, unbaked chocolate batter, partially covering Oreo cookies at the base.
A square pan of brownies topped with Oreo cookies and colorful Halloween-themed cream, on a marble surface.

TIPS & TRICKS FOR SUPER FUDGY BROWNIES

  • Yolk It Up. Swap 2 whole eggs for 1 egg + 1 yolk. That extra yolk = rich, gooey, fudgy magic.
  • Stir, Don’t Whip. Mix until everything’s just combined. Overmixing sneaks in too much air and gives you cake-y brownies (and we’re not here for that).
  • Chocolate on Chocolate. Fold in chocolate chips for melty pockets of goodness in every bite.
  • Toothpick Trick. Bake until a toothpick comes out with a few fudgy crumbs, not completely clean—that’s when you know they’re just right.
  • Parchment Lifesaver, Line your pan with parchment and leave a little overhang, so you can lift the whole slab out without any mess.
  • Let Them Cool! Let them cool at least 30-45 minutes before cutting. This allows time for the brownies to set and keeps those fudgy centers.
A plate with a moist brownie topped with Oreo cookies and vibrant green and orange layers, accompanied by a skeleton hand fork.

SUBSTITUTIONS & VARIATIONS

  • Double (or Triple!) the Chocolate – Toss in white chocolate chips, chocolate chunks, or Halloween M&M’s for the ultimate chocolatey brownie.
  • Top It Off – Sprinkle on Halloween sprinkles or drizzle melted white chocolate for a festive finish.
  • Go Nuts – Fold in chopped walnuts, pecans, or almonds for a little crunch.
  • Make It From Scratch – Swap the box mix for your favorite from-scratch brownie recipe.
  • Gluten-Free Fun – Use a gluten-free brownie mix and gluten-free Oreos so your gluten-free friends can enjoy too!
A close-up of a chocolate brownie bite, featuring colorful green and orange sprinkles, set on a white plate.

Well, there you have it—a few simple tips and tricks for baking the best Halloween Oreo brownies! This Oreo brownie recipe is super fudgy, festive, and guaranteed to disappear fast. Next time you’re craving a spooky, sweet treat, give this recipe a try!

Continue below for the easy-to-follow Halloween Oreo brownie recipe, dig in, and enjoy every bite!

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A close-up of a fudgy brownie with orange and green creme sandwich cookie pieces inside and on top, with a bite taken out. Another brownie is in the background on a plate.

Spooky Halloween Oreo Brownies

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5 from 1 review

  • Author: Brittany
  • Total Time: 50 minutes
  • Yield: 9 brownies 1x
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Description

These Halloween Oreo brownies are the sweetest way to bring spooky fun to your dessert table! This Oreo brownie recipe has layers of rich, fudgy brownies with Halloween Oreo cookies baked in the center for a surprise crunch in every bite. They’re simple, festive, and guaranteed to disappear fast—making them the perfect Halloween treat to share.

Ingredients

Units Scale
  • 1 Box Brownie Mix (see notes)
  • 1/2 cup Butter (melted)
  • 1 Egg
  • 1 Egg Yolk
  • 1/4 cup Water
  • 1 cup Chocolate Chips
  • 20 Halloween Oreos

Instructions

  1. Preheat & Prep: Start by preheating the oven to 350°F. Prepare a parchment lined 8×8 inch square pan with baking spray or a homemade pan release. Let the parchment hang over the edges—instant handles
  2. Melt Butter: In a microwave-safe bowl, microwave the butter at 15-30 second intervals until completely melted. Set aside

  3. Combine the Ingredients: In a large mixing bowl, add the brownie mix, egg, egg yolk, melted butter, and water. Stir until the batter is almost combined—don’t overmix

  4. Chocolate Chips: Add the chocolate chips to the brownie batter and gently fold them in with a spatula until evenly distributed.

  5. Layering: Spread half of the brownie batter evenly into the prepared pan. Arrange the Halloween Oreos in a single layer over the batter. Carefully spread the remaining brownie batter over the Oreos, making sure they’re fully covered

  6. Oreo Topping: Arrange whole and halved Oreos on top of the batter, pressing them in slightly for decoration.

  7. Bake: Bake for 40–45 minutes, or until a toothpick inserted into the center comes out mostly clean with just a few moist crumbs. We don’t want a completely clean toothpick, we want these fudgy!

Equipment

(affiliate)

Notes

Brownie Mix: My favorite brownie mix is Duncan Hines-Dark Chocolate Fudge (18.2 oz).

  • Prep Time: 10 minutes
  • Cook Time: 40 minutes
  • Category: Dessert
  • Method: Bake
  • Cuisine: American

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2 Comments

  1. The perfect way to level up boxed brownie mix! Recipe was easy to follow and turned out exactly how pictured. Can sub different varieties of Oreos so it’s not just a Halloween treat. Will be using again for sure!

    Reply

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