Rhubarb Crunch Cobbler
["1 c. brown sugar", "3/4 c. rolled oats", "1 c. flour", "1/3 c. margarine", "4 c. diced rhubarb", "1 c. sugar", "3 tsp. cornstarch", "1 c. water", "1 tsp. vanilla", "1 tsp. cinnamon"]
["Mix brown sugar, oats, flour and margarine with cinnamon until crumbly.", "Press half of mixture into 9 x 9-inch pan.", "Cover with rhubarb."]
["brown sugar", "rolled oats", "flour", "margarine", "rhubarb", "sugar", "cornstarch", "water", "vanilla", "cinnamon"]