1 c. flour
3/4 c. oatmeal
1 c. brown sugar
1 stick butter
1 tsp. cinnamon
4 c. sliced rhubarb
1 c. sugar
2 tbsp. cornstarch
1 c. water
1 tsp. vanilla

Mix flour, oatmeal, brown sugar, butter and cinnamon until crumbly. Cook cornstarch, sugar, water and vanilla until thick. Put half of the first mixture into a 9 inch square pan. Mix the cornstarch mixture with the rhubarb. Pour over the 1st layer. Top with remaining crumbly mixture. Bake at 350 for 1 hour.