Rinse the shot glasses and dry them well. Spread a thin layer of white icing around the rims of each glass.

Pour Christmas Jimmies sprinkles into a shallow bowl. Dip the frosted rims of your shot glasses into the sprinkles to coat.

In a cocktail shaker, combine Baileys Irish Cream, vanilla vodka, half-and-half, and amaretto if using. Add ice and shake gently for about 15 seconds.

Remove the ice and strain the mixture into the prepared shot glasses, filling just to the rim.

Optionally garnish with a mini candy cane or cinnamon stick on the rim.

Serve the shots immediately cold for the best experience.