Fluffy Cheese Puffs
["4 oz. cream cheese", "1/2 c. butter", "4 oz. Cheddar cheese, cubed", "3 egg whites", "1 loaf unsliced white bread, crust removed"]
["Melt cream cheese, butter and Cheddar cheese in a pan either over hot water or over very low heat, stirring until smooth.", "Cool to lukewarm.", "Beat egg whites stiff and fold into the cooled cheese mixture.", "Cut bread into 1-inch cubes.", "Dip each cube into the cheese mixture.", "Using a fork, swirl it around to coat completely.", "(Often, you'll have to spread cheese mixture on bread with a knife.) Place on greased sheet and refrigerate overnight. Preheat oven to 400\u00b0.", "Bake for 8 minutes or until light brown. Yields 5 1/2 dozen."]
["cream cheese", "butter", "Cheddar cheese", "egg whites", "white bread"]