Sweet Potato Souffle
["2 c. cooked, mashed sweet potatoes", "1/2 stick margarine", "1 c. sugar", "1/2 c. canned milk", "2 beaten eggs", "1/2 tsp. nutmeg", "1/2 tsp. cinnamon", "1 tsp. vanilla", "1 tsp. butter flavoring", "1/4 tsp. salt"]
["Place ingredients in a bowl; mix well with mixer.", "Spoon into a 1 1/2-quart casserole dish."]
["potatoes", "margarine", "sugar", "milk", "eggs", "nutmeg", "cinnamon", "vanilla", "butter", "salt"]