Ingredients:
1 pound ground beef
1/2 pound ground pork
1 cup breadcrumbs
1/2 cup milk
1/2 cup grated Parmesan cheese
1/2 cup finely chopped onions
1 cup finely chopped mushrooms
4 slices bacon, cooked and crumbled
1 cup shredded Swiss cheese
2 large eggs
1 tablespoon Worcestershire sauce
1 tablespoon ketchup
1 teaspoon garlic powder
1 teaspoon dried thyme
1/2 teaspoon salt
1/2 teaspoon black pepper
1/2 cup ketchup (for topping)
