Place rhubarb in 8x8" baking dish. Combine granulated sugar and 3 tablespoons flour. Sprinkle over rhubarb.
Combine brown sugar, remaining flour, oatmeal and salt. Cut butter into mixture as for pastry. Sprinkle over rhubarb. Bake at 350F for 35 minutes. [Flanagan Parent-Teacher Club Cookbook - GEnie/D.Weissgerbe - Aol/Rik W]