9 inch glass pan

For 9x13 use 1 1/2 recipe.

Combine:

1 c. flour
3/4 c. oatmeal
1 c. brown sugar
1/2 c. melted butter
1 tsp. cinnamon

Press half of this mixture into an ungreased pan. Top with 4 cups of finely cut rhubarb.

Boil the following until clear:

1 c. sugar
2 heaping tbsp. cornstarch
1 c. water (red food coloring if desired)

Add 1 teaspoon vanilla when above mixture is cooked. Mix and pour over rhubarb and sprinkle remaining crumb mixture on top. Bake at 350 degrees for 1 hour or 325 for glass pan.