Miscellaneous with butt

1 pound ground chuck (ground beef) 1 pound ground pork 1 lb Sirloin steak; beef, sirloin steak cubed * 1/4 pound butter plus 1 tablespoon 1 large onion[...]

1 1/2 pounds boneless pork butt or shoulder trimmed of excess fat and cut into 1/2 -inch cubes Salt and pepper 3 tablespoons olive oil , more as needed 1[...]