Shoo-Fly Pie
["1 unbaked 9-inch pie shell (unpricked)", "1 1/2 c. flour", "1/2 c. brown sugar", "1/2 tsp. cinnamon", "1/8 tsp. salt", "1/8 tsp. ginger, nutmeg and cloves", "1/4 c. butter", "1/2 c. molasses", "1/2 c. boiling water", "1/2 tsp. baking soda"]
["Combine molasses, boiling water and baking soda.", "Pour over prepared shell.", "Sprinkle with remaining crumbs.", "Bake at 350\u00b0 for 30 to 35 minutes, or until filling is set and crumbs golden brown."]
["pie shell", "flour", "brown sugar", "cinnamon", "salt", "ginger", "butter", "molasses", "boiling water", "baking soda"]