Caramel Pecan Pie
["1 (9-inch) pie shell, cooked", "1/2 c. white sugar", "2 Tbsp. cornstarch", "1/2 tsp. salt", "3 eggs, separated", "1 c. pecans", "2 c. milk", "1 tsp. vanilla", "3/4 c. sugar", "1 Tbsp. margarine"]
["Pour 1/2 cup sugar in heavy pan on burner; let brown nicely. Add beaten eggs, milk, rest of the sugar, cornstarch and salt and let it thicken.", "Add margarine, vanilla and pecans.", "Pour into shell.", "Beat egg whites; pour over and let brown.", "Could use Cool Whip or serve with ice cream."]
["pie shell", "white sugar", "cornstarch", "salt", "eggs", "pecans", "milk", "vanilla", "sugar", "margarine"]