Ingredients
1 cup all-purpose flour1 cup old-fashioned oats1 cup packed brown sugar1 teaspoon ground cinnamon1/2 cup cold butter, cubed4 cups diced fresh rhubarb or frozen rhubarb1-1/3 cups sugar2 teaspoons cornstarch1 cup cold water1 teaspoon vanilla extractVanilla ice cream, optional
Preparation
In a large bowl, combine the first four ingredients. Cut in butter until mixture resembles coarse crumbs. Press half of the mixture into a greased 8-in. square baking dish. Set remaining crumb mixture aside for topping. Sprinkle rhubarb over crust; set aside.
In a small saucepan, combine the sugar and cornstarch; gradually whisk in water until smooth. Bring to a boil; cook and stir for 2 minutes or until thickened.
Remove from the heat; whisk in vanilla. Pour over rhubarb. Sprinkle with reserved crumb mixture.
Bake, uncovered, at 350° for 1 hour or until bubbly and lightly browned. Serve warm with ice cream if desired.
