Lemon Frost Pie With Blueberry Sauce
["1 c. flour", "1/2 c. margarine, softened", "2 Tbsp. sugar", "1/4 tsp. salt"]
["With pastry blender or fork, combine flour, margarine, sugar and salt until mixture is consistency of coarse meal. Press onto bottom and up sides of 9-inch plate. Bake at 375\u00b0 for 12 to 15 minutes; cool."]
["flour", "margarine", "sugar", "salt"]