Shoo-Fly Cake
["4 c. flour", "1 lb. brown sugar", "3/4 c. oil", "1 c. molasses", "1 Tbsp. baking soda", "2 1/4 c. boiling water", "1/2 tsp. salt", "1/2 tsp. vanilla"]
["Mix first 3 ingredients into crumbs. Remove 1 cup crumbs for topping."]
["flour", "brown sugar", "oil", "molasses", "baking soda", "boiling water", "salt", "vanilla"]