1. Mix first 5 ingredients in medium bowl.
2. Add ground turkey and generous amount of pepper.
3. Form mixture into two 1/2-inch-thick patties.
4. Pour thin layer of oil into heavy medium skillet over medium heat.
5. Add patties.
6. Cover and fry until just cooked through, about 3 minutes per side.
7. Top each patty with Naturally Smoked cheese.
8. Cover and cook until just melted.
9. Transfer to plates.
10. Top with onion slices and serve.