Cobweb cake is a great fun recipe to work on together for Halloween. Stretchy marshmallow tops a chocolate ganache cake for a spooky dessert.
Jump to RecipeOur school district has a wonderful schedule that allows for many breaks throughout the year for our staff and students. We always have a break for the first week in October and this is the first year we didn’t travel (not for COVID reasons, we just wanted to stay home and relax). But, without traveling, the boys wanted to do some crafts and fun things. Tyler saw a photo of a cobweb cake and we decided we could try to make one together.

We started with a chocolate cake and added a ganache to the top. I wanted it to be a dark color so the cobwebs would really stand out. Then we melted marshmallows to stretch across for the cobwebs. The cobwebs were the hardest part, but also the most fun part of the cobweb cake.
Due to my dairy allergy, we made this a dairy-free recipe. The cake was a devil-food cake that had no dairy in it. I used vegan butter, almond milk, and vegan chocolate chips. If you don’t have that allergy, then you can use the “regular” stuff to make yours.
Once we were done, the cake tasted like Hostess Chocolate Cupcakes, you know, the ones filled with marshmallow cream?
The marshmallow is very sticky, and it takes some practice to get it to stretch as you need. I found it best to stick one side to the cake stand, then stretch it across and stick the other side down.
Tyler helped me take some of the photos like he did when he made his Sprinkled Rice Krispies Treats. He thought it was a lot of fun to spin the cake stand and take a photo.


Cobweb Cake Step by Step
Ingredients
- 1 1/2 cups powdered sugar
- 12 tbsp butter, softened
- 2 tbsp milk
- 2 baked 8-inch round chocolate cakes
- 12 oz chocolate chips
- 12 oz marshmallows

Preparation
Place the cake rounds into the freezer.
Meanwhile, use an electric mixer to combine the powdered sugar, 4 tbsp butter, and milk until it forms a creamy frosting.

Take the cake out of the freezer and spread the frosting over one layer then place the other layer on top. You may need to cut the top off of the bottom cake layer to make it level so the other cake doesn’t break.

Place the cake back into the freezer.

In a medium bowl, microwave the chocolate chips and remaining 8 tbsp butter until melted.

Remove the cake from the freezer and place it on a cooling rack over parchment paper then pour half of the chocolate ganache over the cakes. The cooling rack helps the extra ganache fall off without pooling under or around the cake.

Let it stand for 10-15 minutes, until the ganache starts to harden before pouring the remaining ganache on the cake.

Let the cake stand for 1 hour while the ganache completely hardens.
In a large bowl, microwave the marshmallows on high for about 30 seconds, until melted when stirred.

Wear rubber gloves and gently pull bits of the marshmallow to stretch and lay over the cake.

Slice the cake carefully so the cobwebs don’t pull apart and serve.

Leftovers
We put the remaining cobweb cake in a container and place it in the refrigerator. It’s still too hot and humid here in South Texas to leave anything out with the potential to melt. It was good for another 2 days which was all the time it lasted at our house!

Recipe
Originally Published On: October 18, 2021

Cobweb Cake
Ingredients
- 1 1/2 cups powdered sugar
- 12 tbsp butter (softened)
- 2 tbsp milk
- 2 baked 8-inch round chocolate cakes
- 12 oz chocolate chips
- 12 oz marshmallows
Recommended Equipment
Instructions
- Place the cake rounds into the freezer
- Meanwhile, use an electric mixer to combine the powdered sugar, 4 tbsp butter, and milk until it forms a creamy frosting
- Take the cake out of the freezer and spread the frosting over one layer then place the other layer on top
- Place the cake back into the freezer
- In a medium bowl, microwave the chocolate chips and remaining 8 tbsp butter until melted
- Remove the cake from the freezer and place on a cooling rack over parchment paper then pour half of the chocolate ganache over the cakes
- Let it stand for 10-15 minutes, until the ganache starts to harden before pouring the remaining ganache on the cake
- Let the cake stand for 1 hour while the ganache completely hardens
- In a large bowl, microwave the marshmallows on high for about 30 seconds, until melted when stirred
- Wear rubber gloves and gently pull bits of the marshmallow to stretch and lay over the cake
- Serve the cake in slices
All nutritional information is based on third-party calculations and should be considered estimates. Actual nutrition content will vary based on brands used, measuring methods, portion sizes, and more.
Other Halloween Recipes
- 6 Delicious Healthy Snacks for Halloween
- 7 Delicious Halloween Snacks to Make with Children
- Yummy Crunchy Halloween Bark
- Cobweb Cake
- Jack-O-Lantern Quesadillas
- Mac and Cheese Bites with Pumpkin
- Nearly-Headless Nick’s Deathday Cake
More Cake Recipes
- Easy Pull-Apart Caramel Coffee Cake Recipe
- Ice Cream Sandwich Cake Recipe: Perfect Summer Dessert
- Dutch Oven Apple Cobbler Dump Cake Recipe for Camping
- Chocolate Strawberry Cake
- Cobweb Cake
- Strawberry Shortcake
- Soft and Chewy Chocolate Chip Cookie Cake
- King Cake with Cream Cheese and Pecan Filling
- Elegant and Creamy Banana Cake with Cream Cheese Frosting
- Chocolate Cake with Cream Cheese Frosting
- Nearly-Headless Nick’s Deathday Cake
- Better-Than-Sex Cake or Chocolate Caramel Poke Cake
- Harry Potter’s Birthday Cake
- Peach and Blueberry Cake
- Carrot Cake with Pineapple Filling
- Banana Cake with Glaze
- Pineapple Upside-Down Cake
- Perfect Fall Pumpkin Roll
Other Chocolate Chip Recipes
- Oreo-Stuffed Chocolate Chip Cookies
- Easy Chocolate Fondue
- Cherry Chocolate Cookies
- Triple Chocolate Coconut Bars
- Chocolate Chip Banana Bread
- Double Chocolate Fudge Recipe with Only 5 Ingredients
- Soft and Chewy Chocolate Chip Cookie Cake
- The BEST Chocolate Chip Cookies I’ve Ever Eaten
- Chocolate Cake with Cream Cheese Frosting
- Peppermint Chocolate Ganache Thumbprint Cookies
- Chocolate and Caramel Cockroach Clusters
- Make-Ahead Oatmeal Breakfast Bars
- Vegan Breakfast Cookies
- Better-Than-Sex Cake or Chocolate Caramel Poke Cake
- Chocolate Chip Muffins
- Homemade Hot Fudge Sauce
- Vegan Mounds Bars
- Overnight Oatmeal Cups
- Cookies and Cream Dip
- Chocolate Chip Cookies with No Butter or Dairy (Vegan Recipe)
- Brownies from Scratch
- Banana Bread Cheesecake
- Oatmeal Energy Balls
- Cobweb Cake
- Paleo Brownies in the Blender (Dairy-Free, Gluten-Free)
What a fun idea! We are having a block party and I have been looking for more Halloween desserts to make for it!
A must try and not only because I think it is exquisite, but also because it looks just right for Halloween!
Oh wow, what a spooky looking cake, perfect for Halloweens when all our friends come around for the party.
Wow! This is a thrilling, yet excitingly delicious cobweb cake!! Creative and right for the Halloween theme.
This is such a fun cake for Halloween but also really fun to make with the family. What a great way to get into the spirit!
What a neat idea for a Halloween cake. My daughter loves baking and it would be fun to make this with her.
I love the sound of this cake. What a great idea. It would make a great cake for a Halloween party.
I love this so much! What a very cool idea!
This is the perfect cake for Halloween! I do like to bake, so I have to give this a try 🙂
This sounds like a really fun one to make! I love the outcome too.
Oh wow this cake looks amazing and perfect for a spooky Halloween meal or party – my boys would love to make this – it’s going on our Halloween list
Laura x
This is a new and unique cake, I have never seen, really. Cool idea for my next Halloween.
Creepy cake, but I’ll bet it tastes delish!
Not sure if I’ll be able to eat that coz it’s kinda freaky haha.
the cake looks amazing! I would love to try and cook it at home one day. Looks great!
This is a quite creative cake. I will let kids try next time.
I’ve never had cobweb cake before, it looks DELICIOUS…I can’t wait to make your recipe, can’t wait!!!
This looks like a fun cake to make with the kids. You can be very creative!
This cake looks so fun to make. My kids will surely enjoy making this.