Japanese Hamburger Steak

Name: Japanese Hamburger Steak
Ingredients: 1 pound ground beef; 1 pound ground pork; onion (minced); 1 egg; 3 tbsp panko; 30 ml milk; 1 tsp nutmeg; salt; pepper; 3 tbsp ketchup; 3 tbsp bulldog sauce; 1 tbsp butter; garlic powder; onion powder; parmesan cheese; parsley; olive oil