Preheat the oven to 350°F. Grease a cupcake pan, or put 12 cupcake liners in the wells of a cupcake pan. Set aside.
In a mixing bowl add the melted butter and sugar and mix until combines. Add in the egg until incorporated, then mix in the vanilla. Add the cherry vanilla Coca-Cola to the mix and combine thoroughly. Whisk in the flour, baking powder and salt and whisk until the batter is smooth.
Fill cupcake pan wells each 2/3 full, then bake in the pre-heated oven for 18-22 minutes, until the cupcakes are golden and a toothpick inserted in the center of one cupcake comes out clean.