Whisk the sauce ingredients together in a small mixing bowl.
Place the salmon filets in a large zip lock bag. Pour half of the sauce into the bag with the salmon and reserve the remaining sauce. Marinade the salmon for at least 1 hour.
Preheat the grill over medium high heat (approximately 400 degrees F) and rub the grill grates with oil or spray with non-stick cooking spray to keep the salmon from sticking to the grill.
Place the salmon on the grill over direct heat. Cook for 4-6 minutes per side until the salmon is cooked through and the salmon flakes easily. Remove from the grill.
Heat the remaining sauce in a small saucepan over medium high heat. Whisk and heat until the sauce thickens (7-9 minutes). Brush the glaze over the grilled salmon and top with the sesame seeds and diced onions. Enjoy!
Notes
Refrigerate the leftover salmon in an airtight container for up to 2-3 days.