Instructions

  1. In a small bowl, combine the flour, brown sugar, oats, butter, 1 teaspoon vanilla and cinnamon. Set aside 1 cup for topping; press remaining crumb mixture into a greased 8-in. square baking dish. Top with rhubarb, strawberries and blackberries.
  2. In a small saucepan, combine sugar and cornstarch. Stir in water. Bring to a boil; cook and stir for 1-2 minutes or until thickened. Stir in remaining vanilla. Pour over fruit; sprinkle with remaining crumb mixture.
  3. Bake at 350° for 25-30 minutes or until bubbly. Serve with ice cream.