Light Never-Fail Pie Crust
["3 c. plain flour", "1/2 c. low-fat margarine or butter", "1 egg, slightly beaten", "1 Tbsp. vinegar", "1/2 c. cold water"]
["Cut margarine and flour until crumbly.", "Add egg, vinegar and ice water; mix well.", "Form into ball.", "Divide into 3 portions and roll out.", "Bake at 350\u00b0 for 25 minutes for baked shell."]
["flour", "low-fat margarine", "egg", "vinegar", "cold water"]