Chocolate Spider Layer Cake Recipe
A soft, airy chocolate cake layered with whipped ganache, wrapped in a gooey marshmallow web, and topped with an edible spider — the ultimate Halloween showstopper.

Ingredients
10 servings
Instructions
- Heat the cream to a boil.
- Pour over the chocolate in three parts, stirring each time until smooth.
- Reserve ¼ cup of ganache for shaping the spider body later.
- Cover the remaining ganache with plastic wrap (touching the surface) and refrigerate for at least 2 hours, until chilled.
- Once chilled, whip using a stand mixer until light, fluffy, and firm.
- Preheat to 350°F (180°C) standard or 320°F (160°C) fan/convection. Lightly grease and line two 7-inch (18 cm) round cake pans with parchment paper.
- In a large bowl, whisk together flour, cocoa powder, baking powder, baking soda, salt, and sugar until well combined.
- Add the eggs, milk, oil, and vanilla, whisking until the batter is smooth and lump-free.
- Slowly pour in the boiling water, whisking until the batter is silky and slightly thin — this makes it extra moist.
- Divide batter evenly between pans and bake for 30–35 minutes, or until a toothpick inserted in the center comes out clean.
- Let cakes cool in the pans for 10 minutes, then remove and transfer to a wire rack to cool completely before frosting.
- Optional: pour ¼ cup of batter into a small greased mold for the spider body; bake for 40 minutes.
- Once baked, run a knife around the edges and let the cake cool completely before removing from the pan.
- Slice: the large cake horizontally into 2 layers and trim the top if domed.
- Spread whipped ganache between the layers and over the entire cake. Chill to set the ganache.
- Microwave marshmallows for 30 seconds until stretchy.
- Pull strands apart with your fingers or two spoons and wrap them around the cake to form a web.
- Crumble the small baked cake and mix with the reserved ganache.
- Shape into a body and head, then roll in chocolate sprinkles.
- Freeze briefly (10-15 minutes), then place on top of the cake.
- Insert 8 Pocky sticks for legs in an upside down V shape (4 per side).
- Add red and black fondant eyes.
- Keep refrigerated until ready to serve
Nutrition per serving
686kcal
💰 Cost Estimate
Total Ingredients
$6153.00
$6153.00
Per Serving
$615.00/serving
$615.00/serving
🏠 Savings
~$12306.00 vs buying!
~$12306.00 vs buying!
📋 Price Breakdown (88% ingredients detected)
| Ingredient | Amount | Subtotal |
|---|---|---|
| heavy cream | 2 cups | $211.00 |
| dark chocolate | 13 oz | $1526.00 |
| all-purpose flour | 1.75 cups | $14.00 |
| unsweetened cocoa powder | 0.75 cup | $2089.00 |
| baking powder | 1.5 tsp | $10.00 |
| baking soda | 1.5 tsp | $3.00 |
| salt | 1 tsp | $1.00 |
| granulated sugar | 2 cup | $78.00 |
| eggs | 2 large | $65.00 |
| milk | 1 cup | $25.00 |
| neutral oil | 0.5 cup | $33.00 |
| pure vanilla extract | 2 tsp | $102.00 |
| boiling water | 1 cup | - |
| chocolate pocky sticks | 16 | $1878.00 |
| white marshmallows | 6 large | $118.00 |
| Red and black fondant | - | - |
| Chocolate sprinkles | - | - |
*Estimated market prices, may vary by region
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