You do not need to bake this pie. It's an icebox pie. The truth is, the key lime juice is so acidic, nothing can live in it. It's basically egg yolk ceviche if you want to get right down to it. I mean, I wouldn't add raw shrimp, but you know, you do you.
Variations on this include using boxed pudding mix, making your own vanilla wafers, not caramelizing the bananas, making a crust with ground Nilla wafers and butter like you would for a graham cracker crust. You could even add oysters. I wouldn't but it's your kitchen.
I got this recipe from my wife who got it when she was young from some lady named Hazel Evans. Ms. Evans is gone, but she left us a pretty damned tasty, easy to prepare cake.
Freakishly sweet, rich blackberries are in season right now and I need a decent Southern dessert to bring this home. Now, in the interest of full disclosure, this is one of those dishes from my youth, passed down from my Mamaw to my mother, except they called it blackberry cobbler. It is not a cobbler.