01 -
Set oven temperature to 375°F (190°C) to ensure even baking.
02 -
Cook bacon in a skillet over medium heat until crispy. Remove, drain, and crumble. In the same skillet, sauté onions and mushrooms until mushrooms are tender and onions are translucent. Set aside to cool.
03 -
In a large mixing bowl, combine ground beef, ground pork, breadcrumbs, milk, Parmesan cheese, crumbled bacon, shredded Swiss cheese, sautéed onions, and mushrooms. Add eggs, Worcestershire sauce, 1 tablespoon ketchup, garlic powder, thyme, salt, and pepper. Mix gently until just combined to avoid overworking.
04 -
Form mixture into a loaf approximately 2 inches high on a lined baking sheet or in a baking dish. Smooth the surface carefully to prevent cracking. Spread remaining 1 tablespoon ketchup evenly over the top.
05 -
Bake in the preheated oven for 60 to 70 minutes, or until deeply browned and an internal temperature of 160°F (71°C) is reached.
06 -
Remove from oven and let rest for 10 minutes to allow juices to redistribute. Slice and serve warm.