My recipe is pretty simple. I start with 5 lbs of meat (3 lbs of burger & 2 lbs of ground pork is ideal). I dice 1 onion, 1 red pepper and 1 green pepper and sautee them. Then I mix the meat and the pepper/onion mixture and add salt, pepper, onion powder, granulated garlic, a little cumin, a good blast of Sriracha sauce and some ketchup. Form it into a single long loaf and place it on a strip of greased foil. Usually takes about 2.25 hours at 250-ish.
I usually smear the top with Sriracha & ketchup before I smoke it but that's optional.