Montgomery Pie - cooking recipe

Ingredients

1 recipe pastry for a 9 inch single crust pie
Bottom Layer:
1/2 cup white sugar
2 tablespoons all-purpose flour
1/2 cup molasses
1 egg
1 cup water
3 tablespoons fresh lemon juice
1 tablespoon lemon zest
Top Layer:
2/3 cup white sugar
1/4 cup butter, room temperature
1 egg, beaten
1 1/4 cups all-purpose flour
1/2 teaspoon baking soda
1/2 cup buttermilk

Preparation

Preheat oven to 375 degrees F (190 degrees C).
Combine 1/2 cup sugar with 2 tablespoons flour and mix well. Stir in the molasses, egg, 1 cup water, lemon juice and lemon zest. Mix thoroughly and pour into the unbaked pie shell.
Cream the butter with the remaining 2/3 cup white sugar until light and fluffy. Add the beaten egg. Sift 1-1/4 cups flour and baking soda together, then add to the creamed mixture alternately with the buttermilk or sour milk (see Cook's Note). Spread over the top of the mixture in the pie shell.
Bake in preheated oven until filling is set, 35 to 40 minutes.