Spray a cooking pan with non-stick cooking spray and set aside.
Add the ingredients for the miso ginger marinade/sauce in your mixer.
Mix/pulse ingredients for a few minutes until everything is finely blended.
After the ingredients are blended, put half of the marinade in a separate container We will use this a bit later in the process. Apply the other half of the marinade to each fillet, thoroughly coating each fillet.
Place salmon fillets in a covered dish and then in the refrigerator for 30 - 45 minutes.
Remove dish from refrigerator and scrape off excess miso ginger sauce.
Turn broiler on high. Place the fillets in a cooking pan that you've sprayed with your nonstick cooking spray. Place pan on the top rack of the oven on broil (hi) for 4 - 5 minutes.
About halfway through the broiling process, remove the cooking pan from the oven. Get the other half of the sauce you mixed up earlier and apply a good coating of the sauce to your fillets. Return your fillets to the oven to finish cooking.
After the second half of your cooking time expires (4 - 5 minutes cook time total), remove the fillets from the oven. Using a fork, test how easily the salmon flakes apart. Salmon that is properly cooked should have an internal temp of 145 F and flake easily.
Use the chopped green onions to garnish.
Sesame oil and ginger can have a strong flavor. I try to go a little light on those ingredients.