Sweet and sour lemon custard surrounded by a thin and healthy pie crust. Oat and wheat bran are combined with egg whites and cream cheese making a high fiber pie crust. Pre-bake the crust to crisp the dough enough to hold the custard during the final baking process. Artificial sweetener, skim milk, and powdered skim milk are whipped together for a smooth syrupy filling. Fresh lemon juice adds a fresh, zesty bite that is folded into the custard. Top the pie with peeled lemon rime or shaved lemon zest.