Edible Halloween Terrarium

5 from 1 vote

This edible Halloween terrarium combines layers of crumbled chocolate cake, candy rocks, and green-dyed cookie moss to create a spooky cemetery scene. Complete with edible gravestones and hidden chocolate bones, it's the perfect Halloween dessert for large gatherings.

Prep Time20

Cook Time30

Total Time1 5

Course: Dessert

Cuisine: American

Servings: people

Author: Eden

Cost: $40

Ingredients

3 cups chocolate candy rocks
1 9x13 chocolate cake
14 ounces digestive biscuits or ladyfinger cookies
1 1/2 cups chocolate frosting
4 ounces white chocolate or white candy melts
2 tbsp neon green food coloring
fresh herbs
candy pumpkins

Instructions

Start by baking your 9-by-13-inch chocolate cake. You can either use a boxed mix or your favorite homemade recipe. A great tip is to bake the cake a few days ahead of time and freeze it to save prep time.
While your cake bakes or thaws, melt some white chocolate to make candy bones. Pour the melted chocolate into a bone-shaped silicone mold and allow it to harden completely.
In a food processor, combine the digestive biscuits (or Belvita cookies, if you prefer) with a few drops of neon green food coloring. Pulse the mixture until the cookies are finely crumbled and resemble moss in texture. This will add a realistic and eerie green layer to your terrarium.
Before you begin assembling your terrarium, gather and prepare all the ingredients to make the process smooth. This includes crumbling the cake, crushing the cookies, making the chocolate bones, and organizing your decorations like candy rocks and gravestones. It’s best to have everything on hand for fast layering.
Begin the terrarium by adding some chocolate candy rocks to the bottom of your tall glass jar. This will act as the foundation and create a gravel-like effect at the base.
Next, add a generous layer of crumbled chocolate cake over the candy rocks. Press it down lightly to create a firm layer, and then spread a layer of chocolate frosting on top of the cake crumbles for extra flavor and texture.
Take the white chocolate bones you made earlier and carefully slide them into the cake "dirt" near the glass edges. Position them so they’re visible from outside the terrarium, creating a creepy effect as if bones are peeking through the soil.
After positioning the bones, add another layer of crumbled chocolate cake, followed by another layer of chocolate frosting. The multiple layers will not only look impressive but also taste decadent when served.
Sprinkle the "moss" over the top layer of chocolate cake and frosting. Press it down slightly to ensure it sticks. Next, insert your RIP gravestone cookies from ladyfingers into the moss layer. Add a few more candy rocks, chocolate bones, and fresh herbs like thyme or rosemary to create a miniature cemetery scene. The herbs will mimic spooky little trees and complete the Halloween look.

Notes

ou can use this recipe as a flexible guide to create an edible Halloween terrarium in any size you like. Adjust the ingredients based on the size of your glass jar or container, whether you're making a small version or an extra-large centerpiece for a party. You can layer as much or as little cake, frosting, and candy rocks as needed, and get creative with the decorations—add more gravestones, pumpkins, or herbs for a spookier effect. The possibilities are endless, allowing you to customize the dessert to fit your vision and event!

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