In a separate bowl, stir to combine 1 cup corn syrup, 3 eggs, 1/4 cup sugar and 1 teaspoon of vanilla. (Don't use an electric mixer or it will add air to the glaze and make it foamy). This glaze will be divided and used for both of the pies. You might not use all of the glaze and be sure not to add too much or it will make the pie runny.