Salmon filets are marinated in an easy teriyaki marinade and then seared to get the outside crispy. They finish cooking in the oven to keep the inside moist.
Mix together sesame oil, rice vinegar, soy sauce, brown sugar, garlic, ground mustard, ground ginger, and red pepper flakes and pour into a large ziptop bag.
Add salmon to bag and refrigerate 2 to 6 hours.
Remove salmon from marinade and pat dry with paper towels.
Pour marinade into a small saucepan. Whisk in cornstarch. Bring to a boil for 1 minute and remove from heat.
Heat vegetable oil in an oven-proof skillet. Add salmon with skin facing up. Cook until seared and flip over. Baste with sauce and place in 300 degree oven for 10 to 12 minutes.
Baste with more sauce and sprinkle with green onions and sesame seeds.