Mix cinnamon, 2 cups sugar. Pour over rhubarb and let stand; stir frequently. Mix 2 cups flour, baking powder, salt, 6 tablespoons sugar; add shortening, egg, milk; mix with beater. Put flour mixture in bottom of greased 9x13 inch pan. Spread rhubarb mixture over top. Combine butter, quarter c sugar, 3 tablespoons flour; sprinkle over rhubarb. Bake 45 minutes in 180ºC oven. [Flanagan Parent-Teach Club Cookbook GEnie/D.WEISSGERBE AOL/Rik W]