In a large pan, fry the ground beef, ground pork and onions together until browned. Drain off any excess grease into a disposable container.
Stir in the next nine ingredients. Let simmer for a good 15 minutes or so.
Preheat your oven to 350ยบ. Slice the King's Hawaiian Savory Butter Roles down the middle with a sharp bread knife. Take off the tops and load up each sandwich with a generous spoonful of the meat mixture, then top each with shredded cheese.
In a small pan, melt 2 tablespoons of butter.
Lay the sandwich tops back on and brush each with the melted butter. Sprinkle with sesame seeds.
Bake in your preheated oven until the cheese melts and the tops crisp up a bit, about 15 minutes. Serve hot with chips, carrots and lots of napkins!