I used a white cake recipe for the cupcake itself, baked them the day before. I wanted to use a filling for the center, found a recipe on line here. I can tell you I would do something different next time like a pudding/cream or a fruit and cream mixture. I was not too thrilled with the milk processing and the texture of the final product.
For the topping, I made a confectioner's sugar glaze to dip the cupcakes in, sprinkled them with the sugar crystals while it was still wet. That is it!