So why the misnomer? Why not just call it "lime pie fudge" and be done with it? Let's be honest: have you ever heard of plain "lime pie"? Probably not. It sounds kind of boring, whereas "key lime pie" is exotic and interesting and immediately conjures up thoughts of a light, tart filling billowing out of a crisp graham cracker crust, topped with a cloud of whipped cream. THAT, my friends, is the power of labeling, and that is why I'm going to keep calling this Key Lime Pie Fudge, no matter what kind of lime juice I use to make it.
Aside from the little lime juice snafu, this does bear a strong resemblance to key lime pie. Both have a slightly sweetened, crunchy graham cracker base, and both are loaded with lime juice and lime zest for a tart, refreshing flavor. The fudge has lots of white chocolate so it's also plenty sweet, and the vanilla in the white chocolate is a nice counterbalance to the lime juice. So give it a try, using whatever kind of lime juice strikes your face. You could even go crazy and use a mix of lemon and lime juices! I won't mind, and I won't tell.
Get the recipe: Key Lime Pie Fudge
Key Lime Pie Fudge Photo c2011 Elizabeth LaBau, licensed to About.com, Inc.