Rhubarb Pineapple Pie
["2 1/2 c. fresh rhubarb, cut in 1/2-inch pieces before measuring", "1 1/4 c. drained pineapple (tidbits or crushed)", "3 Tbsp. quick cooking tapioca", "1 1/4 c. sugar", "1/2 tsp. salt", "1/3 c. water", "pastry for 1-crust 9-inch pie", "1/3 c. firmly packed brown sugar", "3 Tbsp. flour", "1/2 tsp. cinnamon", "2 Tbsp. slightly soft butter"]
["Combine rhubarb, pineapple, tapioca, sugar, salt and water; let stand about 15 minutes.", "Fill pastry with fruit mixture.", "Combine brown sugar, flour, cinnamon and butter to make topping; sprinkle over fruit.", "Bake in hot oven at 425\u00b0 for 35 to 40 minutes or until syrup boils with heavy bubbles that do not burst.", "This recipe makes 1 pie."]
["fresh rhubarb", "pineapple", "tapioca", "sugar", "salt", "water", "pastry", "brown sugar", "flour", "cinnamon", "butter"]