Beat the egg (I just beat with a fork until smooth) and mix well with brown sugar, flour, corn syrup, vanilla and water. Bring to a boil in a pot on top of the stove. Remove pot as soon as it starts boiling and set aside. Let mixture cool.
Crumb Instructions:
Whisk together the flour, sugar, cream of tartar, baking soda and salt. Cut in the softened butter until mixture is like coarse crumbs. Pour the cooled, boiled ingredients into your pie shell and spread the crumb topping over the top. Bake in a preheated 350 degree oven 45 minutes. Makes 6 to 8 servings.
Notes
If using a deep dish pie shell use 3/4 cup brown sugar, 1 1/2 tablespoons all-purpose flour, 1/2 cup corn syrup, 2 teaspoons vanilla extract, 2 eggs and 1 1/2 cups water. Everything else remains the same.