Rhubarb Bars
["3 c. chopped rhubarb", "1 1/2 c. sugar", "2 Tbsp. cornstarch", "1/4 c. water", "1 tsp. vanilla", "1/2 tsp. baking soda", "1 c. butter or margarine", "1/2 c. chopped nuts", "1 1/2 c. rolled oats", "1 1/2 c. flour", "1 c. brown sugar"]
["In medium saucepan, combine rhubarb, sugar, cornstarch and water; bring to a boil, stirring often. Cook until thick and bubbly, then stir in baking soda and vanilla. Remove from heat. In large bowl, cut butter into oats, flour and brown sugar until crumbly. Pat 3/4 of mixture over bottom of ungreased 9 x 13 pan. Spread rhubarb filling over crust. Sprinkle with remaining crumbs. Bake at 375\u00b0 for 30 minutes. Makes 2 dozen. Freezes well."]
["rhubarb", "sugar", "cornstarch", "water", "vanilla", "baking soda", "butter", "nuts", "rolled oats", "flour", "brown sugar"]