How to Bake a Jack Skellington Cake | Nightmare Before Christmas Sponge Cake

There’s something about The Nightmare Before Christmas that makes it such a classic during spooky season! Whether you’re watching it for Halloween or Christmas (or both!), Jack Skellington is one of those characters who never goes out of style.

So, of course, I had to turn one of my favorite Halloween characters into a cake!

For this baking project, we’re making a Jack Skellington-inspired vanilla sponge cake, featuring his iconic silhouette standing on Spiral Hill against a pale, moon-like background.

But here’s what makes this cake even more fun: the entire design is made from cake batter and baked directly into the sponge! No fondant, edible images, or detailed buttercream decorating required.

And on the inside? Two layers of soft, fluffy vanilla sponge with a generous filling of homemade vanilla whipped cream.

If you’ve been wanting to experiment with creative cake decorating techniques, this is such a fun one to try. So, let’s get cozy and bake!

What Is a Designed Sponge Cake?

A designed sponge cake is exactly what it sounds like: a sponge cake with a decorative pattern baked directly into the cake itself.

Instead of decorating the outside with buttercream or fondant, we divide small portions of the sponge batter, add food coloring, and pipe our design onto parchment paper.

Once the design has chilled, we gently cover it with the remaining batter and bake everything together.

When the cake comes out of the oven, we peel away the parchment paper to reveal the design!

The best part about this technique is that it can be customized for practically any theme, from holidays and birthdays to your favorite movie characters.

What Makes Sponge Cake Different From Regular Cake?

Unlike traditional butter cakes, which rely heavily on creamed butter and chemical leavening agents for their structure, this sponge cake gets its rise primarily from whipped eggs.

When we whip the egg whites, we incorporate air into the mixture. This air expands during baking, giving the cake its signature light and fluffy texture.

That’s also why the mixing process is so important.

If you overmix your sponge batter after adding the whipped egg whites, you can knock out the air you’ve worked so hard to incorporate, leaving you with a denser cake.

My biggest tip: Take your time folding the batter together! Use a spatula, work gently, and stop mixing as soon as everything is incorporated.

How to Make the Perfect Jack Skellington Design

The design is definitely the star of this cake, so let’s talk about a few things that will help you get the best results.

1. Start With a Simple Design

If this is your first time making a designed sponge cake, don’t feel pressured to recreate every tiny detail of Jack Skellington.

For this cake, I focused on his recognizable silhouette standing on the curled hill with a large, pale moon-like background.

Simple, bold shapes tend to translate much better when you’re piping with sponge cake batter.

2. Use Gel Food Coloring

Gel food coloring is essential for this technique, especially when working with darker colors like black.

Unlike liquid food coloring, gel coloring is highly concentrated, meaning you can achieve deeper colors without adding too much extra liquid to the batter.

For my Jack Skellington cake, we’re using:

• Black for Jack and the iconic spiral hill

• Uncolored vanilla batter for the pale moon background

• Orange for small decorative pumpkins

• Optional gray for additional shading and details

3. Pipe Your Design Before Adding the Cake Batter

This is where things get a little different from your typical cake recipe.

We’re piping our design onto parchment paper before adding the rest of the sponge batter.

Because the cake gets flipped over after baking, the design we pipe first is what will be revealed on the finished cake.

I recommend starting with your smaller details before moving on to larger shapes.

And remember, you don’t need a ton of fancy piping tips! A piping bag with a very small opening works perfectly.

4. Chill Your Design

After piping, refrigerate your design for approximately 5–8 minutes.

This helps the piped batter hold its shape while you cover it with the remaining sponge.

When adding the plain batter, be gentle. I recommend spooning or piping it over the design instead of pouring everything in at once.

The less you disturb your illustration, the cleaner your final design will be.

How to Keep Your Sponge Cake Light and Fluffy

Since we’re making a sponge cake, let’s talk about one of the most important parts of this recipe: the egg whites!

Use room-temperature eggs. Room-temperature egg whites generally whip more readily and can create greater volume.

Make sure your bowl is clean. Any grease or leftover egg yolk can interfere with the egg whites’ ability to whip properly.

Whip to stiff peaks. You want your meringue to hold its shape when you lift the whisk, without becoming dry or grainy.

Fold instead of stirring. Use a spatula to gently lift batter from the bottom of your bowl and fold it over the top.

Avoid overbaking. Sponge cakes are relatively delicate and can dry out quickly, especially when baked in thinner layers.

For this recipe, I recommend beginning to check the cake around the 10-minute mark.

Your sponge should be lightly golden and spring back when gently pressed.

Why We’re Using Whipped Cream Instead of Buttercream

I love a good buttercream, but sometimes you want something a little lighter, especially when you’re working with a delicate vanilla sponge.

That’s why I decided to fill this cake with homemade vanilla whipped cream!

The soft, airy texture of whipped cream complements the sponge without making the cake overly rich or heavy.

We’re keeping the filling simple with heavy whipping cream, powdered sugar, a little vanilla, and a pinch of salt.

The result is a lightly sweetened cream that lets the vanilla flavor of the sponge shine.

One thing to remember is that whipped cream is more delicate than buttercream, so this cake should stay refrigerated until you’re ready to serve.

Common Sponge Cake Mistakes to Avoid

Why Did My Sponge Cake Turn Out Dense?

A dense sponge cake usually means that too much air was lost from the batter.

This can happen if the egg whites weren’t whipped enough or if the batter was mixed too aggressively when folding.

Make sure your egg whites reach stiff peaks and use gentle folding motions to preserve their structure.

Why Did My Design Smear?

If your design smears when adding the remaining batter, it may not have chilled long enough, or the batter may have been added too forcefully.

Try piping the batter gently over your design in smaller amounts before smoothing everything into an even layer.

Why Is My Sponge Cake Dry?

Sponge cakes bake relatively quickly, and even a few extra minutes in the oven can affect their moisture.

Begin checking your cake early and remove it once it is fully baked and springs back when gently touched.

Why Did My Design Stick to the Parchment?

Make sure your parchment paper is properly fitted inside your cake pan and lightly greased if needed.

For the cleanest reveal, carefully peel the parchment away while the sponge is still warm rather than letting the cake cool completely with the parchment attached.

Can I Make This Jack Skellington Cake Ahead of Time?

Absolutely!

If you’re preparing this cake for a Halloween party, I recommend baking the sponge layers ahead of time and assembling the cake closer to when you’ll be serving it.

The unfrosted sponge layers can be wrapped tightly once completely cooled and stored for the next day.

For longer storage, you can freeze the unfrosted sponge layers for up to 2 months.

Because the finished cake contains fresh whipped cream, refrigerate it in an airtight container or covered cake carrier. For the best flavor and texture, enjoy it within 2–3 days.

More Halloween Baking Ideas

If you loved this Jack Skellington cake, there are so many other fun spooky-season recipes you can try!

From Halloween-inspired cookies and festive cupcakes to classic fall flavors like pumpkin, apple, and cinnamon, there’s no shortage of cozy baking projects to enjoy this season.

And remember, baking doesn’t have to be perfect to be fun. Sometimes the most creative recipes are the ones where we get to experiment and learn something new along the way.

If you recreate this cake, I’d love to see how yours turns out!

Be sure to tag me on Instagram or TikTok @sweets4dayz.deirdra, and subscribe to Cozy Baking with Deirdra on YouTube for more baking tutorials, decorating inspiration, and cozy recipes.

Happy baking, and stay cozy! 

There are Halloween cakes that are cute, and then there are Halloween cakes that immediately set the mood. This Spiderweb S’mores Chocolate Cake falls firmly into the second category.

Dark chocolate cake layers made with both black cocoa and traditional cocoa are stacked with marshmallow creme and mini marshmallows that are toasted directly inside the cake. The outside stays dramatically clean with vanilla buttercream before black buttercream is piped across the surface in a spiderweb design.

It has all the familiar flavors of a classic s’more—chocolate, toasted marshmallow, and optional graham cracker accents—but transforms them into an elevated Halloween layer cake.

If you are looking for a Halloween chocolate cake, spiderweb cake, s’mores cake recipe, black cocoa cake, or marshmallow chocolate cake, this recipe combines all of them into one showpiece dessert.

Why Black Cocoa Is Perfect for Halloween Baking

Black cocoa is one of my favorite ingredients for Halloween desserts because it creates naturally dramatic color without needing to turn the entire cake batter black with food coloring.

It is the cocoa most associated with the very dark appearance and familiar flavor of chocolate sandwich cookies.

However, there is a reason this recipe does not use black cocoa alone.

Black cocoa is heavily alkalized, which gives it its deep color but also creates a milder, less traditionally chocolatey flavor.

By using half black cocoa and half natural cocoa powder, the cake gets the striking dark appearance we want for Halloween while keeping a fuller chocolate flavor.

The contrast becomes especially noticeable after slicing the cake. The almost-black cake layers sit against white marshmallow filling and vanilla buttercream, making the inside just as visually dramatic as the spiderweb exterior.

The Secret to Moist Chocolate Cake

This batter is intentionally thin.

If you are used to thick butter-based cake batters, it may seem unusual at first. Resist the urge to add more flour.

A high amount of liquid contributes to the exceptionally moist texture of this chocolate cake.

Hot water also helps hydrate and bloom the cocoa powder, intensifying its chocolate flavor.

Vegetable oil provides moisture that remains soft even when the cake has been refrigerated. That becomes particularly useful for a decorated layer cake because the assembled cake needs chilling time to stabilize the marshmallow filling and buttercream.

The cake is also baked at a relatively low temperature. Gentle baking helps the layers bake evenly while preserving moisture.

The finished result should be dark, soft, rich, and sturdy enough to stack without feeling dense.

Building a True S’mores Cake Filling

The filling is where this cake becomes especially fun.

Rather than preparing a separate marshmallow buttercream or toasting marshmallows on a baking sheet beforehand, the marshmallow creme and mini marshmallows are toasted together directly inside the cake.

Start by piping a thick ring of vanilla buttercream around the perimeter of the first chocolate cake layer.

This is called a buttercream dam, and it is essential when working with a soft filling such as marshmallow creme.

Spread marshmallow creme inside the border, then scatter mini marshmallows over the surface.

Now use a kitchen torch.

Carefully torch both the marshmallow creme and mini marshmallows until you see golden toasted areas and a few deeper caramelized spots.

This is what gives the filling its real campfire character.

The mini marshmallows become golden and soft while the exposed marshmallow creme caramelizes in patches.

Allow the filling to cool briefly before setting the next chocolate cake layer on top. Then repeat the entire process.

When the cake is sliced, you get pockets of actual toasted marshmallow between dark chocolate cake instead of simply marshmallow-flavored frosting.

Why Use a Buttercream Dam?

Marshmallow creme is delicious, but structurally it behaves very differently from buttercream.

If it is spread all the way to the edge of a cake layer and another layer is stacked on top, the weight of the cake can push the filling outward.

That creates bulging sides or filling that escapes into the exterior frosting.

A sturdy vanilla buttercream dam contains the marshmallow filling.

Pipe it thick enough that the filling remains slightly below the top of the dam.

After both filling layers are complete, chilling the stacked cake for 20 to 30 minutes helps the buttercream become firm before the crumb coat is added.

That short refrigeration period makes the rest of the decorating process significantly easier.

A Silky Vanilla Buttercream for Dark Chocolate Cake

The outer frosting is intentionally vanilla rather than chocolate.

Visually, the pale buttercream creates maximum contrast with the black spiderweb decoration and almost-black cake layers underneath.

Flavor-wise, vanilla also prevents the dessert from becoming overwhelmingly chocolate-heavy.

This buttercream begins differently from a traditional American buttercream.

Powdered sugar, pasteurized egg whites, vanilla bean paste, and salt are whipped together before softened butter is gradually added.

Adding the butter one stick at a time allows it to emulsify into the mixture and eventually become pale, smooth, and silky.

The finished frosting is less aggressively sweet than many standard powdered-sugar buttercreams while remaining excellent for filling dams, coating cakes, and piping details.

Reserve some before covering the cake so it can be colored black for the spiderweb.

How to Make Black Buttercream

Black frosting can be difficult because adding excessive food coloring can affect both flavor and texture.

Start with gel food coloring rather than liquid coloring.

Gel is much more concentrated and allows you to deepen the frosting without introducing a large amount of additional moisture.

You also do not necessarily need the buttercream to look jet black immediately.

Bring it to a very dark charcoal, then let it rest. Black frosting often deepens as the color has time to develop.

Because only the spiderweb needs to be black, you can achieve the dramatic Halloween appearance without coloring an entire batch of frosting.

How to Pipe a Spiderweb Cake

A spiderweb is one of those cake designs that looks intricate but is actually very approachable.

Transfer the black buttercream into a piping bag fitted with a small round tip.

Start by piping several straight lines outward from a central point, creating the spokes of the web.

Then connect those lines with gently curved sections.

Continue working outward until the web reaches the edge of the cake.

For a slightly more dramatic design, allow a few strands to continue down the side.

The web does not need to be perfectly symmetrical. In fact, slight irregularity can make it look more natural.

You can leave the cake there for an elegant gothic Halloween look or add a small chocolate spider.

Where Do Graham Crackers Fit Into a S’mores Cake?

S’mores traditionally need three things: chocolate, marshmallow, and graham cracker.

Chocolate and marshmallow are clearly the stars of this cake, so graham crackers can be used as an accent rather than another heavy filling.

A small amount of graham cracker crumb around the bottom border works beautifully.

You can also use broken graham pieces as part of the top decoration or serve each slice with a little graham crumble.

Keeping that component subtle lets the spiderweb remain the focal point while still completing the classic s’mores flavor.

The Ultimate Halloween Chocolate Cake

This is the kind of cake I love for Halloween because the theme is not just sitting on the surface.

The Halloween aesthetic runs through the entire dessert.

Black cocoa creates naturally dark cake layers. Toasted marshmallow creme gives the filling a scorched campfire appearance. White vanilla buttercream creates a ghostly canvas, and deep black buttercream turns the finished cake into a spiderweb.

Most importantly, it still tastes like a dessert first.

Underneath all of that Halloween drama is an ultra-moist chocolate cake layered with gooey toasted marshmallow and silky vanilla frosting.

For a Halloween party, spooky dinner, October birthday, horror movie night, or simply an excuse to bake something dramatic, this Spiderweb S’mores Cake gives you a centerpiece and dessert in one.

Slice through that clean white spiderweb exterior and the dark cake and toasted marshmallow inside complete the reveal—which is exactly the kind of surprise a Halloween cake should have.