Sweet Potato Pie
["1/2 stick margarine", "3 egg yolks", "1 c. sugar", "1/2 c. milk", "1 c. cooked sweet potatoes", "2 1/2 Tbsp. cornstarch", "1 tsp. vanilla"]
["Cook in saucepan slowly until thick (not too thick). Cook pie shell about 1/2 done. Add potato mix. Cook about 15 minutes at 350\u00b0.", "Put meringue on top and cook until", "light brown at 300\u00b0."]
["margarine", "egg yolks", "sugar", "milk", "potatoes", "cornstarch", "vanilla"]