Preheat oven to 400℉. Combine the bison, sausage, chopped onion, bread crumbs, egg and ½ cup barbeque sauce in a large bowl. Mix until well combined. It may be helpful to use your hands to get the ingredients well combined.
2 lbs ground bison, 16 oz ground breakfast sausage, ½ yellow onion, ½ c bread crumbs, 1 egg, 1 ½ c barbeque sauce