BBQ Burgers

1-1/2 pound ground sirloin
1 medium onion, finely chopped
1 bottle of favorite BBQ sauce
2 tsp brown sugar
1 T. mustard
1 T. grill/steak seasoning
8 hamburger buns
Favorite burger toppings (lettuce, tomato, onion, etc)

Combine all ingredients thoroughly and shape into 8 burgers. Grill til done.