Make your own Happy Hour treat with these Meyer lemon limoncello cupcakes. The limoncello in the batter and the frosting turn these into an adults only treat that should not be served to kids. Of course you can always make a batch or two without the limoncello, but where’s the fun in that? These cupcakes are flavored with the aforementioned limoncello, fresh Meyer lemon juice, and Meyer lemon zest. They are filled with homemade lemon curd, and topped with cream cheese frosting – there isn’t much sweetness in these cupcakes!