The original recipe came from a local newspaper. I made a few tweaks to make it my own. I like the texture created by the cracker crumbs (I use a buttery cracker) and the grated vegetables. I usually shape the mixture into 2 or 3 loaves and freeze the others for future meals. Smaller loaves may not need as much cooking time, so I recommend checking the internal temperature for desired doneness. This has become a real family favorite.
In a large bowl, combine ground sirloin, sausage, egg, ketchup, cracker crumbs, garlic, seasoning salt, onion, green pepper, carrot, Worcestershire sauce, cheese (if using), and milk. Mix together thoroughly, then turn into a large shallow pan and form into a loaf shape.
Bake at 350 degrees until meat is cooked through, about 60-75 minutes. (Internal temperature of 165 degrees). Remove from oven and let rest a few minutes before slicing and serving.