These cupcakes were an absolute blast to make and decorate. I loved creating them—they turned out playful, spooky, and perfect for Halloween. Inspired by a recent technique I’ve been using on cakes—3D candy melt spheres—I designed these mini witch’s cauldrons to pair with a larger cauldron cake. They echo the same bubbling, whimsical details and make a fun, coordinated dessert for any Halloween spread.
Each cupcake features a dark cauldron base, a black buttercream rim, a bright green “witch’s brew” center, little green candy-melt drips, and an assortment of bubbling toppers. They’re visually striking, come together quickly, and are simple enough to keep the process enjoyable. Below I outline the cake base, decoration steps, and how to make the chocolate candy spheres used as toppers. Let’s dive into the details so you can recreate them at home.
- For the cupcakes I started with a dark chocolate cake base (I used my Dark Chocolate Cake recipe). To intensify the color, I added a small amount of black food coloring to the already dark batter—use sparingly, as a little goes a long way. I baked them in thick pleated black cupcake liners for a true cauldron look; they baked up nicely and provided a perfect base for decorating.
- I piped a rim of black buttercream around the top of each cupcake to form the cauldron edge. My black buttercream was a dark chocolate buttercream tinted with a touch of black food gel for depth.
- To anchor the decorations, I added a small dollop of green buttercream in the center of each cupcake. This helped everything stick and created the appearance of bubbling brew.
- For the ooze down the side, I melted 1 cup of green Wilton candy melts with about 3 tablespoons of heavy cream. I microwaved the mixture briefly and stirred until smooth, then transferred it to a squeeze bottle and let it drip gently down the sides to achieve natural-looking drips.
- For toppings I used candy melt spheres (directions follow), bone sprinkles, eyeball sprinkles, and Wilton’s Halloween bubble sprinkles to give each cupcake a bubbly, eerie finish.
If you want to make the candy spheres used as bubbling toppers, follow the steps below. I’ve included the full directions and a short video to help guide you through the process visually.
How to make chocolate spheres:
- Green Wilton candy melts
- Small half-sphere silicone mold
- Cake scraper or offset spatula
- Small saucepan or warm surface for sealing halves
- Microwave the candy melts in short bursts (about 30–40 seconds), stirring until smooth and lump-free.
- Use a teaspoon to spoon about a teaspoon of melted candy into each half-sphere mold, guiding the chocolate up the sides so each cavity is coated. Continue until all cavities are filled.
- Use a cake scraper or offset spatula to level the tops, creating flat half-spheres.
- Let the molds set at room temperature for 20–30 minutes, or chill in the freezer for about 10 minutes, then carefully pop the halves from the mold.
- Warm a small saucepan over low heat until it’s warm but not smoking. Working with two halves at a time, briefly press the open rim of one half onto the warm pan for a fraction of a second to melt the edge, then quickly press it to another half to seal and form a sphere. Wipe away any excess and let them firm up.
- Alternatively, heat a full half for less than a second and press it onto another half’s rim to attach. Allow spheres to cool completely before using as cupcake toppers.
Below is a short video showing how I assemble these cupcakes—watching the process can make recreating them much easier.
I’m excited to share more Halloween cake and cupcake ideas soon. If you try these cauldron cupcakes, I’d love to see your results—tag #bakingwithblondie or @bakingwithblondie on Instagram, or send a message. Seeing your creations always makes my day.