This is what I found but it looks pretty bare to me.

Outback Key Lime Pie
Source: Cindi Prudhomme

Filling:
Water
3 cups sugar
1 pkg unflavored gelatin
Salt
Juice of 3 limes
Sweetened condensed milk

Heat water, sugar, gelatin, salt and lime juice in pot don't boil. Then mix in condensed milk and heat again--again not to boiling.

Crust:
Butter
Graham cracker crumbs

Place butter in a pan and melt. Mix in crumbs till makes a crust-like substance. Pour filling into crust and let cool.