4 slices bacon
1/4 c. onions, chopped
1 (4 oz.) can mushroom pieces, drained & diced
1 lb. lean ground beef
1 lb. pork sausage
1/4 c. grated Parmesan cheese
1/2 tsp. pepper
1/2 tsp. garlic powder
2 tbsp. steak sauce
8 hamburger buns
Lettuce

Cook bacon until crisp. Drain all but 2 tablespoons drippings and saute onions in drippings. Crumble bacon and add with mushrooms to skillet. Crumble bacon, add with mushrooms to skillet. Set aside. Combine beef, pork, cheese, pepper, garlic powder and steak sauce in a large bowl. Shape into 16 patties. Divide bacon mixture and place over eight of the patties. Place remaining patties on top and press edges tightly to seal. Grill over medium coals until well done. Serve on buns, with lettuce, if desired.