1 c. all-purpose flour
1 c. packed brown sugar
3/4 c. oatmeal
1/2 c. butter, melted
4-5 c. raw rhubarb, sliced
1 c. sugar
1 c. cold water
2 tbsp. cornstarch
1 tsp. vanilla extract

In bowl, mix flour, brown sugar, oatmeal and butter. Press 3/4 of mixture into bottom of 9 x 9 inch pan. Cover with rhubarb. In saucepan, mix all remaining ingredients. Cook over medium heat, stirring constantly until thickened. Pour over the rhubarb. Sprinkle remaining flour-oatmeal mixture on top. Bake at 350 degrees for 45-60 minutes until bubbly and brown. Cool. Yield 12 servings.