To begin, peel and slice your apples. The apple slices should be about 1/6 inch think.
Place your pie crust in your pie tin and cover the bottom with a layer of apple slices.
Next, crush up your saltines. I like to put them in a gallon back and crush with my hands before going in with a rolling pin.
Add a layer of cracker crumbs on top of the apples. Then a layer of apples, then crumbs, etc. End with a layer of crumbs; this will form the top crust.
In a large mixing bowl, combine the vanilla, eggs, evaporated milk, and water. Slowly add in the sugar and mix until smooth to form the custard.
Slowly poor the custard over the crumbs and apples, making sure to soak thoroughly.
Place in the oven at 375 degrees for 50 minutes.