Crockpot French Onion Meatloaf with Melted Swiss Cheese

Prepare the Meat Mixture:
In a large bowl, mix together the ground beef, breadcrumbs, Parmesan cheese, milk, eggs, Worcestershire sauce, salt, and pepper. Combine thoroughly until all ingredients are evenly incorporated.
Form the Loaf:
Shape the beef mixture into a loaf form. Place the loaf carefully in your crockpot.
Caramelize the Onions:
Melt butter in a skillet over medium heat. Add the thinly sliced onions and cook them slowly, stirring occasionally, until they become caramelized, which takes about 20-25 minutes. Once caramelized, pour in the beef broth and continue cooking until most of the liquid is absorbed.
Add Onions to the Meatloaf:
Pour the caramelized onions with broth over the meatloaf in the crockpot.