To prepare a white chocolate truffle and champagne cupcakes recipe, first you need to prepare the ingredients. First, you will need: White Chocolate Truffles. You can use any type of chocolate you like, but I like to use semi-sweet chocolate. If you don't have semi - sweet chocolate, use chocolate chips instead. Then, add the milk and vanilla extract to the dry ingredients and mix until everything is well combined. Next, pour the batter into cupcake liners and bake for 18 to 20 minutes, or until the toothpick inserted in the center comes out clean. Allow to cool for 5 minutes before removing from the pan.