Frozen Blueberry-Key Lime Pie

This pie is great for parties when you end up spending a lot of energy on the dinner and need a no-fuss but impressive finale. Keep it frozen until a few minutes before serving—just enough time to clear the dishes off the table. For easiest slicing, use a tart pan with a removable bottom. The creamy-tart flavor of the pie is just as delicious prepared in a traditional pie plate, but that first slice can get a bit messed up when removed. I like using the small wild blueberries here because t