I often make this old-fashioned favorite in spring when fresh rhubarb is plentiful. But it also works well with frozen rhubarb. It's pretty and pink...and has a nice crunch, thanks to the oatmeal crust and topping.
-Shirley Dreher, Clark, South Dakota
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.