Yes, these do glow. And yes, they will make any Halloween party better.
- 1 cup unsalted butter, room temperature
- 1/4 cup + 1 tablespoon tonic water
- 6 cups confectioner's sugar
- 3 ounce packet of Jello-O (yellow or green works best)
- 1 cup boiling water
- 1 cup chilled tonic water
- 24 cupcakes
- Place the butter in a large bowl and beat with an electric mixer until pale and fluffy.
- Add 1/4 cup + 1 tablespoon tonic water and 4 cups confectioner's sugar and mix until combined.