1 c. brown sugar
1 c. white sugar
1/2 c. shortening
1 egg
2 c. flour
2 c. chopped rhubarb
1 tsp. cinnamon
1 tsp. baking soda
1 tsp. salt
1 c. sour milk or buttermilk
1 tsp. vanilla
1/4 c. butter

Mix sugars (reserve 1/2 cup mix) with shortening. Add egg. Beat well. Add dry ingredients alternately with milk to creamed mixture. Add rhubarb and vanilla and mix. Pour into greased 9 x 13 inch pan.

TOPPING:

Mix 1/2 cup mixed sugars with 1/4 cup butter and 1/2 cup flour. (1 teaspoon cinnamon is optional). Mix into crumbs and sprinkle over batter. Bake at 350 degrees for 35 to 40 minutes.