2 c. brown sugar
2 c. flour
1 1/2 c. quick oats
1 c. butter, melted
2 tsp. cinnamon
5 c. rhubarb, raw and diced
1 1/2 c. white sugar
2 tbsp. cornstarch
1 c. water
1 tsp. vanilla

Mix first 5 ingredients until crumbly. Press half of this mixture into greased 9 x 13 inch pan. Cover with rhubarb.

Cook white sugar, cornstarch, and water until thick and clear. Remove from heat. Add vanilla and pour syrup over rhubarb. Sprinkle rest of crumbly mixture over all and pat lightly. Bake in 350 degree oven for 45-55 minutes.