These Spooky S’mores Cookies are one of those Halloween desserts that look playful on the outside but hide a seriously gooey surprise in the middle. Each oversized green cookie is stuffed with a whole Chocolate Oreo, a square of milk chocolate, and a marshmallow, then finished with candy eyeballs for a fun monster-cookie look.
The cookie dough itself is packed with three kinds of chocolate plus chopped Chocolate Oreos, so every bite is loaded. Once baked, the marshmallow softens, the chocolate melts, and the Oreo in the center turns into a warm, fudgy layer.
They are best served slightly warm, when the middle is still gooey and the marshmallow stretches as you pull the cookie apart.
In This Recipe
- Why You Will Love These Spooky S’mores Cookies
- Ingredients You’ll Need
- Ingredient Notes
- Expert Tips for Best Results
- How to Make Spooky S’mores Cookies
- The Secret to Keeping the Filling Inside
- How to Know When the Cookies Are Done
- Frequently Asked Questions
- Storage and Reheating
- Recipe Card
Why You Will Love These Spooky S’mores Cookies
A Hidden S’mores Center
Instead of simply mixing marshmallows into the dough, each cookie has an entire layered center made from an Oreo, milk chocolate, and marshmallow.
Perfect for Halloween
Green cookie dough and candy eyeballs transform a simple stuffed cookie into a fun spooky-season dessert without complicated decorating.
Loaded with Chocolate
The dough includes semisweet chips, mini milk chocolate chips, chopped milk chocolate, and Chocolate Oreos.
Soft, Gooey Centers
The cookies are baked until the edges are lightly golden while the centers remain soft.
Big Bakery-Style Cookies
This recipe makes only 8 cookies, so each one is thick, oversized, and packed with filling.
Ingredients
For the Green Cookie Dough
- 6 tablespoons (85g) unsalted butter, softened
- ⅓ cup (67g) granulated sugar
- ⅓ cup (70g) packed brown sugar
- 1 large egg
- ½ teaspoon vanilla extract
- Green gel food coloring, as needed
- 1½ cups (180g) all-purpose flour
- ½ teaspoon baking powder
- ½ teaspoon fine salt
- ⅓ cup semisweet chocolate chips
- ⅓ cup mini milk chocolate chips
- ⅓ cup chopped milk chocolate
- 4 Chocolate Oreos, roughly chopped
For the S’mores Centers
- 8 whole Chocolate Oreos
- 8 marshmallows
- 8 squares milk chocolate
For Decorating
- Candy eyeball sprinkles'
Ingredient Notes
Softened Butter
Use softened rather than melted butter.
This helps create a thicker dough that can hold the large s’mores filling without spreading too much.
Brown Sugar
Brown sugar adds moisture and chewiness, while granulated sugar helps with structure and lightly crisp edges.
Green Food Coloring
Gel food coloring works best because it gives strong color without adding much extra liquid.
Chocolate Oreos
These deepen the chocolate flavor and add crunch to both the dough and the center.
Marshmallows
Standard marshmallows work better than minis for the stuffed center because one whole marshmallow creates a more dramatic gooey middle.
Expert Tips for the Best Spooky S’mores Cookies
Use Gel Food Coloring
Liquid coloring can thin the dough and make it spread more.
Keep the Filling Centered
Place the Oreo, chocolate, and marshmallow directly in the middle of the dough.
If the filling sits too close to the edge, the marshmallow may leak out.
Seal Completely
No marshmallow or chocolate should be visible before baking.
Pinch any cracks closed.
Use Enough Dough
These are intentionally large cookies.
A thin layer of dough around the filling can split while baking.
Don’t Overbake
The cookies should remain soft in the center.
They continue setting on the baking tray after they come out of the oven.
Add Eyeballs While Warm
The candy eyeballs adhere best when pressed into the tops shortly after baking.
How to Make Spooky S’mores Cookies
Step 1 – Prepare the Oven
Preheat the oven to 350°F (175°C).
Line a large baking sheet with parchment paper.