1 c. flour
3/4 c. uncooked rolled oats
1 c. brown sugar
1/2 c. melted butter
1 tsp. cinnamon

FRUIT MIXTURE:

4 c. diced rhubarb
1 c. sugar
1 tsp. vanilla
1 c. water
2 tbsp. cornstarch
Red food coloring

Mix crumb mixture. Press 1/2 of mixture in greased 9 inch layer pan. Cover with rhubarb in small pan. Combine sugar, cornstarch, water and vanilla. Cook, stirring until thick and clear. Add red food coloring until desired color. Pour over rhubarb. Top with remaining crumbs. Bake at 350 degrees for 1 hour. Top with whipped cream, if desired.