Juicy Lucy Burgers
For the juiciest burgers, be sure your ground beef is at least 20% fat.
Did you make a tight seal? I hope so, because it needs to be TIGHT to avoid a cheesy eruption as the cheese melts, creates steam, and tries to find its way out.
You can also fire up a medium-hot bed of coals and cook these on your backyard grill.
Reynolds® parchment can be used for easier cleanup/removal from the pan.