Preheat an outdoor grill for medium heat and lightly oil grate.
Step 2
Place the salmon (still in foil) onto a preheated grill and cover. Cook for 15 minutes or until salmon flakes easily with a fork.
Step 3
Place the salmon on a large sheet of aluminum foil. Place the onion rings on top of the filet. Pepper to taste. Wrap the foil around the salmon, but don't seal the top.