This giant cupcake melt and pour soap comes out of a single silicone mold that does all the work for you: no piping skills needed. I brushed a little purple mica inside the frosting part of the mold, filled it with white soap, then poured a shimmery gold “cake” base. The finished cupcake is about 4 inches tall and weighs about 6 oz.
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Materials & Tools
Soap Base
- White melt and pour soap base for the frosting, like goat’s milk or shea butter melt and pour
- Melt and pour base for the cupcake bottom
- About 6 oz of soap in total per cupcake, plus a little extra
Color & Scent
- A gold mica for the cake and a purple mica for the frosting, from a Stardust mica set or similar
- Fragrance oil (I used Cinnamon Sugar from Bramble Berry, which smells like cinnamon gum)
Tools
- Giant cupcake silicone mold
- A small paintbrush
- Spray bottle of 91% isopropyl alcohol
- Infrared thermometer
- A small extra mold for leftover soap
Fragrance Amount
Use up to 5 ml of fragrance oil per 16 oz (1 lb) of soap base. For a 6 oz cupcake, that’s about 2 ml. Cinnamon scents are strong, so it’s easy to overdo it. You can always use less, but don’t go over 5 ml per 16 oz.
How to Make a Giant Cupcake Melt and Pour Soap
1. Melt the Soap and Mix the Gold
Melt the soap for the cupcake bottom and mix a gold mica with a little alcohol. It gives a shimmery, cake-like color. Melt the white base for the frosting separately.
2. Brush Mica Into the Frosting
Here’s the trick. Put a tiny bit of purple mica in the frosting end of the mold and lightly brush it around the inside. It may look dark, but it lightens once the white soap goes in.
3. Pour the Frosting
Add your fragrance. Pour the white soap into the frosting section until you reach the ridge where the cupcake liner starts. Pour any extra into a small mold so it doesn’t go to waste. Spray with alcohol.
4. Pour the Gold Cake
Let the frosting form a skin, then spray it with alcohol. Pour the gold soap when it’s around 120–126°F so it doesn’t break through and mix with the white. If your soap sets up while you wait, remelt it. Mine broke through a little and gave a pretty, unintentional swirl.
5. Let It Set
Pop any air bubbles with alcohol and leave the mold alone for a few hours. This is a thick silicone mold, so it takes a while to set.
6. Unmold
Fold the mold inside out as far as you can, then push gently from the bottom. The purple mica comes out nice and even on the frosting, and the gold looks just like cake.
Tips & What I Learned
- Brush mica into the mold. It colors the frosting details without any piping.
- Pour frosting first. The top of the cupcake is the bottom of the mold.
- Let the frosting skin over. It keeps the gold from mixing in.
- Fold the mold inside out. It’s the easiest way to unmold a tall shape.
- Be patient. Thick silicone molds take a few hours to set.
Troubleshooting
The gold mixed into the frosting.
The gold was poured too hot, or the frosting wasn’t set enough. Wait for a skin and pour around 120°F.
The soap set before I poured the second layer.
Remelt it for a few seconds and let it cool back down.
The cupcake is stuck in the mold.
Make sure it’s fully set, then fold the mold inside out and push gently.
FAQ
How much fragrance oil should I use?
Up to 5 ml per 16 oz of soap base, or about 2 ml for one 6 oz cupcake. You can always use less, but don’t use more than 5 ml per 16 oz.
How big is the finished cupcake?
About 4 inches tall and about 6 oz.
Do I need to pipe frosting?
No. The mold creates the frosting shape for you.
More Cupcake Soap Ideas
- Cupcake Melt and Pour Soap 3 Ways
- Unicorn Cupcake Melt and Pour Soap
- How to Make Whipped Soap
- Melt Whip and Pipe Soap Frosting
- All my melt and pour soap tutorials on YouTube
If you make this, I’d love to see it! Tag me on Instagram or Pinterest, and subscribe on YouTube for new soap tutorials.
