Grandma Darlene's Rhubarb Crunch

6 c. diced rhubarb
2 c. sugar
6 T. flour

Mix and put in bottom of pan.

1 c. brown sugar
1 1/2 c. flour
1/2 c. shortening
1 c. oatmeal
1/2 c. butter

Mix and put on top of rhubarb mix. Bake at 350° for 40 min.