Dark Chocolate Spider Bundt Cake – Easy Halloween Dessert

This Halloween spider bundt cake combines moist, delicious chocolate cake with a decadent ganache topping and cute decorations for the ultimate Halloween treat! It’s the perfect spooky dessert for your next Halloween party!

The Perfect Halloween Dessert

There are two types of people in the world: those who can resist a second slice of chocolate cake and those who know better. Around here, we don’t even try. This Double Chocolate Spider Bundt Cake is the kind of Halloween dessert that’s as fun to make as it is to eat. It’s rich, extra moist, and covered in silky ganache, with just the right amount of spooky-cute charm.

This recipe was born out of my love for over-the-top holiday desserts that look impressive but are secretly easy to pull together. I wanted something festive for a Halloween party, but also something I could decorate without turning my kitchen into a full-on bakery crime scene. The result? A deep, dark chocolate Bundt cake made extra rich with brewed coffee, dressed in a glossy ganache, and finished off with candy eyes, licorice legs, and marshmallow fangs.

The best part? It’s a family-friendly project. My kids love helping with the “spider legs,” and they always fight over who gets to put on the fangs. The decorating is where the magic happens, but the flavor? That’s where this cake will hook you. Every slice is soft, chocolaty, and indulgent, perfect for impressing guests or sneaking a forkful when no one’s looking.

So grab your mixing bowls, queue up some spooky music, and let’s make the Halloween showstopper your dessert table has been waiting for – the perfect treat to serve after one of these Halloween dinner ideas!

Tips for a Dark Chocolate Spider Cake

While it’s easy to make this spider bundt cake, here are a few tips and tricks to help your cake achieve that extra dark color: 

• For the darkest looking cake, I recommend using a dark cocoa powder like Ghirardelli or Hershey’s Special Dark cocoa powder along with dark chopped chocolate (60% or higher). 
• Use black sanding sugar on top of the ganache to make the spider appear darker.
• While you can substitute equal amounts of milk or water for the coffee, using coffee will contribute to the dark color of the spider bundt cake. 

Ingredients for Halloween Spider Bundt Cake

You’ll need these ingredients to make your spider bundt cake: 

• eggs
• brewed coffee – you can use fully caffeinated or decaf 
• olive oil
• butter
• brown sugar
• white sugar
• vanilla extract
• cocoa powder
• all-purpose flour
• baking soda
• salt
• dark chocolate baker’s chocolate
• heavy cream
• black licorice
• cinnamon imperial candies
• mini marshmallows
• Halloween sprinkles (optional)

You will also need a pair of kitchen shears to cut the mini marshmallows into fangs.

How to Make a Spider Bundt Cake for Halloween

Ready to bring this spooky treat to life? Follow these step-by-step instructions to create your very own Spider Bundt Cake. Each step is simple, easy to follow, and designed to help you pull off a dessert that’s equal parts creepy and delicious.

Step 1: Make the cake batter: Preheat your oven to 325°F and grease your Bundt pan generously. In one bowl, whisk together the flour, cocoa powder, baking soda, and salt. In another, melt the butter and whisk in the coffee, olive oil, brown sugar, white sugar, and vanilla. Beat in the eggs until smooth, then fold in the dry ingredients until just combined.

*Be careful not to overmix the batter. It may look slightly lumpy, and that’s okay! An overmixed batter = tough, dry cake! 

Step 2: Bake it up: Pour the batter into your prepared Bundt pan, and jiggle the pan from side to side to evenly distribute the batter. Bake for 40–50 minutes, or until a toothpick in the center comes out clean.

When the bundt cake is finished baking, carefully set the cake pan aside to cool for about 10-15 minutes before flipping onto a wire rack to cool down completely. Flipping the bundt pan right away will result in a crumbly mess, and waiting too long can make the cake stick to the pan. 

Step 3: Make the ganache for the dark chocolate spider cake: While your spider bundt cake is cooling, you can make your delicious, decadent ganache topping! Heat your cream on the stove over medium-low heat, taking it off the burner just before it starts to boil. 

While the cream is heating, chop up your bar of dark chocolate using a serrated knife (like a bread knife). The knife’s teeth grip the chocolate bar better and prevent slipping. If you have a particularly thick or large bar of chocolate, it’s easier to break the bar into smaller chunks before attempting to cut it up. 

Pour the hot cream over the chopped chocolate and let it set for a few minutes. Then gently stir the mixture with a silicone spatula or mixing spoon until the chocolate sauce is glossy and smooth. Once it’s ready, set the ganache aside to cool briefly before assembling your Halloween spider cake. 

Step 4: Pour the ganache over the cake: Now that your dark chocolate bundt cake has cooled completely, it’s time to add the decorations! If you haven’t already done so, remove the cake from the Bundt pan by inverting a cake stand or cake storage container over the Bundt cake pan and flipping it. The cake should easily release from the pan. 

Next, pour the ganache evenly over the top of the cake, allowing it to drip down the sides and middle. Use a silicone spatula to scrape out as much of the ganache as possible onto the cake, gently spreading it over the top so that it’s evenly distributed.

Step 5: Add the licorice for the spider legs: Now you’re going to add the black licorice for the spider’s legs. Gently insert 4 pieces of licorice on each side of the dark chocolate bundt cake, making sure they line up with the legs on the opposite side. 

Step 6: Add the spider eyes and fangs: Next, take two cinnamon candies and place them onto the front of the cake to create the spider’s eyes. For the fangs, gently flatten a mini marshmallow with the underside of a measuring cup. Spray a pair of scissors or kitchen shears with cooking oil (or dip the blades in water) and cut the mini marshmallow in half. Pinch the ends of the marshmallow pieces together to resemble fangs and place them below the spider’s eyes. The fangs should stick to the ganache.

Add Halloween sprinkles and black sanding sugar if you desire, and you’re finished! I recommend letting the ganache cool for an hour or so before slicing and serving your Halloween spider bundt cake. 

This decadently spooky spider bundt cake would look amazing as the centerpiece of a Halloween sweets table. It’s almost too cute to cut up, but you’ll definitely want to “sink your teeth” into this chocolatey goodness!

Recipe Tips for Halloween Spider Bundt Cake 

Here are some helpful tips about making your spider cake and your dark chocolate bundt cake decorations: 

• You can use fully caffeinated or decaf coffee, or none at all! If you prefer, substitute equal amounts of milk or water for the coffee in your spider cake recipe. 
• While olive oil gives this Halloween bundt cake its ultra-moist, earthy texture, you can also use vegetable or canola oil as a substitute if you prefer.
• In a hurry? No worries! You can use boxed chocolate or devil’s food boxed cake mix and follow the instructions for baking it in a Bundt pan. No one will judge you!
• The trick to a smooth transition from Bundt cake pan to countertop is in the grease! Ensure your cake doesn’t stick by liberally slathering your Bundt cake pan in butter or shortening. You can also dust the pan with a thin layer of cocoa powder or flour after greasing.
• For a smooth, lump-free ganache, try to chop the chocolate bar as finely as possible. You can also use a food processor instead of a knife! Press the Pulse button until the chocolate is finely chopped but not ground into a powder. 
• If your chopped chocolate isn’t melting well, it’s likely because your cream isn’t hot enough. I don’t recommend microwaving the mixture, but you can pour it into a saucepan and continue to melt over medium-low heat, stirring constantly. Once the chocolate has fully melted, remove the saucepan from heat and continue to stir until the cream is fully incorporated. Set aside to cool. 
• The ganache thickens as it cools, so I recommend pouring it onto the cake while it’s still warm. If you let it cool completely to room temperature, the sauce will be very thick. If this occurs, use an offset spatula to spread the ganache onto the cake for even distribution. 
• I found that a full-length piece of Twizzlers black licorice was slightly too long, so I cut about 1.5 inches off one end to get the desired length. 

Storage Instructions

• Refrigerating Leftovers – Leftover pieces of Halloween spider bundt cake will keep in the fridge for up to 3-4 days. Store leftovers tightly wrapped in plastic wrap so the cake stays nice and moist.
• Freezing Leftovers – For longer storage, wrap in plastic wrap and then foil, and freeze for up to two months. Thaw your bundt cake leftovers from frozen in the fridge for the best-tasting results. 

Other Halloween Desserts You’ll Love…

• Spider Web Cake Mix Cookies – Cake mix cookies are my go-to dessert for busy moms, and these use a yummy chocolate ganache for a super cute Halloween treat!
• Easy Halloween Popcorn Snack Mix – This Halloween popcorn combines deliciously spooky ingredients for an easy snack mix to make for party treats or a scary movie! Use the recommended mix-ins or add your own favorites!
• Halloween Oreo Bats with Reese’s Cups – If the combination of chocolate and peanut butter is your love language, you have to try this cute Halloween treat! They’re easy to make and are the perfect spooky snack for parties!

And there you have it, a Spider Bundt Cake that’s as fun to make as it is to eat! This creepy-crawly creation is the perfect centerpiece for any Halloween party, school event, or cozy night of spooky movies at home.

The best part? It looks impressive without requiring bakery-level skills, so you can wow your guests without stressing in the kitchen. This cake is guaranteed to bring smiles, giggles, and maybe a few playful “ewws” before everyone dives in for a slice.