Rhubarb Oat Dessert Recipe

In a large bowl, combine the flour, oats, brown sugar, nuts, baking soda and salt. Cut in butter until crumbly. Press 3 cups into an ungreased 13-in. x 9-in. baking dish; set aside. Soak rhubarb in 1 cup cold water for 3 minutes; drain. In a saucepan, combine sugar and cornstarch. Stir in remaining cold water until smooth. Add rhubarb, vanilla and food coloring if desired. Bring to a boil; cook and stir for 5 minutes or until thickened. Spoon over crust; sprinkle with remaining crumb mixture. Bake at 350° for 23-25 minutes or until golden brown. Serve with ice cream if desired. Yield: 12 servings.