Potato Souffle
["4 Tbsp. chopped onion", "3 Tbsp. melted butter", "1 c. milk", "2 Tbsp. flour", "salt and pepper to taste", "2 eggs, separated", "3 c. leftover, mashed potatoes"]
["Brown onion in butter.", "Add flour and then milk.", "Add egg yolks and sauce to potatoes; mix well, then fold in beaten egg whites.", "Bake in a greased dish in oven about 25 or 30 minutes at 350\u00b0."]
["onion", "butter", "milk", "flour", "salt", "eggs", "potatoes"]