To prepare a sugar cream pie III recipe, first you need to prepare the filling. First, you'll need the following ingredients: 1 cup sugar, 1 tablespoon vanilla, 2 tablespoons butter, and 2 teaspoons salt. Mix the ingredients together until the sugar is completely dissolved. Pour the mixture into the pie shell and bake it in the oven for 20 to 25 minutes, or until it's just set. Let it cool for 10 minutes before cutting it into squares.