Processed american cheese slice/Sharp cheddar cheese
1 , separated
2 , partially cooked
Shredded process american cheese/Cheddar cheese
Butter one side of bread.
Place buttered side down on baking sheet.
Cover with cheese.
Beat egg white until stiff; mound on top of cheese, covering entire surface.
Wrap bacon, if desired, around edge of bread, forming a collar.
Make a small dent in center of egg white; place egg yolk in dent.
Cover yolk with cheese.
Bake at 400° for 10 minutes.