Mix until crumbly:

2 c. flour
1 c. butter
2 c. brown sugar
1 1/2 c. quick cooking oatmeal
2 tsp. cinnamon

Cook until thickened (stir frequently to prevent burning) :

4 c. rhubarb, cut up
4 c. strawberries, sliced
2 c. sugar
1 c. water
4 tbsp. cornstarch

Use 9 x 13 inch greased pan. Pat 1/2 crumbly mixture in bottom of pan. Pour thickened mixture over patted crumbly mixture. Sprinkle rest of crumbly mixture on top. Bake 40-45 minutes at 350 degrees. Serve with ice cream or whipped cream.