01 -
In a large bowl, combine the ground beef, breadcrumbs, grated Parmesan cheese, milk, eggs, Worcestershire sauce, salt, and ground black pepper. Mix until well combined.
02 -
Shape the mixture into a loaf and carefully place it in the crockpot.
03 -
In a pan, melt the butter over medium heat. Add the sliced onions and caramelize them, stirring occasionally for about 20 minutes until golden and soft.
04 -
Once the onions are caramelized, stir in the broth and allow it to absorb into the onions.
05 -
Layer the caramelized onions and broth over the beefloaf in the crockpot.
06 -
Slow cook the beefloaf on low for 6 to 8 hours until thoroughly cooked.
07 -
About 10 minutes before serving, layer the Swiss cheese slices on top of the beefloaf and allow them to melt.
08 -
Serve the beefloaf warm, topped with melted Swiss cheese and caramelized onions for a delicious meal.