Sweet Potato Casserole
["3 c. cooked mashed yams", "3 Tbsp. butter", "1/2 tsp. salt", "marshmallows", "1 whole egg", "1/2 c. raisins or nuts (if desired)"]
["Heat oven to 375\u00b0.", "Combine all ingredients except marshmallows and put mixture in a greased casserole dish.", "Bake 20 minutes.", "Remove from oven and cover the top with marshmallows. Return to oven just until marshmallows begin to melt and brown slightly."]
["yams", "butter", "salt", "marshmallows", "egg", "raisins"]