Potatoes Supreme
["6 medium potatoes (boil the night before)", "1/2 tsp. salt", "1/2 c. melted butter", "2 c. shredded Cheddar cheese", "1/3 c. chopped green onions", "1 pt. sour cream", "1/4 tsp. pepper"]
["Grate cooked potatoes coarsely. Mix in remaining ingredients and put in a shallow 1 1/2-quart baking dish. Bake at 350\u00b0 for 35 minutes."]
["potatoes", "salt", "butter", "Cheddar cheese", "green onions", "sour cream", "pepper"]