TOPPING:

1 c. flour
1 c. light brown sugar
1/2 c. oatmeal
1/2 c. butter, melted

FILLING:

4 c. rhubarb, 1/2 inch pieces
1/4 c. flour
1/2 c. water
1 c. sugar
1/2 tsp. cinnamon

Mix topping ingredients till crumbly. Mix filling ingredients well. Place filling mixture in a lightly greased 8 x 8 x 2 pan. Sprinkle with topping mixture. Bake in a 375 degree oven for 35 minutes or till rhubarb is tender.