Key lime pies usually have a graham cracker crust, made of crushed graham crackers, melted butter, and a little sugar, pressed into a pie pan and baked. If you don’t like graham cracker crust (this is VERY hard for me to imagine, I could eat that stuff straight) you could use a traditional pie crust instead, blind baked. If you go this route, see my instructions for how to blind bake a pie crust.