For the base combine bread crumbs and sugar with margarine and blend with a fork until well combined and resembles fine bread crumbs in it's original state.
A next way you can go about making base is to add bread crumbs and sugar to the blender then melt butter and pour in; blend for 1 min or until well combined and resembles fine bread crumbs in it's original state.
Grease 9-inch. round/square tin and add base press to the bottom and sides evenly.
At speed 2 on a electrical mixer, cream shortening and sugar together, then combine salt and milk powder and continue to cream.
Add cheese and flour to cream mixture and continue to cream.
Add eggs in 3 stages, then water after and blend well. Add vanilla and lime juice to flavor the mixture.
Pour in prepared tin and bake in a 350°F oven for 1 hour or until when tested with a skewer comes out clean.