1 c. flour
1/4 c. rolled oats
1 1/2 c. brown sugar
1/2 c. butter
1 c. water
1 c. sugar
1 tsp. vanilla
1 tsp. cornstarch
1/2 c. red cinnamon candies

Mix flour, oats, brown sugar, and butter until crumbly. Cook water, sugar, vanilla, cornstarch, and candies until thick. Pour over 4 cups diced rhubarb and cover with crumbly mixture. Bake 1 hour at 350 degrees. Top with whipped cream. Use a 9x13 inch pan.