Another substitution for a pastry crust is to use phyllo dough. Place one sheet in the pie plate and lightly spray with vegetable spray. Add the next sheet and repeat spraying until you have 6 sheets. Bake in preheated 375 degree oven for 5 minutes or until golden. Reduce the amount of the fatty ingredient .
Some recipes call for ingredients that just cry for nuts, coconut or chocolate chips.
Just cut the amount used by half or two thirds. Actually, you could just use the entire recipe with the substitute, but some recipes really do taste better with at least some ground beef. Use water packed tuna rather than oil packed. Use turkey bacon rather than pork bacon. Reduce the amount of sugar used by one quarter.