Key Lime Pie Cupcakes
I used the Lemon Gem cupcake recipe from VwaV, but I subbed lime juice and zest for the lemon and added a bit more flour to make a thicker batter. They rose much better this time around, incidentally. I made a cream cheese frosting with Better Than Cream Cheese, Earth Balance, powdered sugar, and lime juice, and then sprinkled crushed graham cracker crumbs on top. They came out really well - very light and limey, but still creamy from the frosting. The graham cracker crumbs added a nice cinnamony crunch as well as a cute finish.
Mission: accomplished. I'll definitely be filing this one away for future use.