01 - Heat the oven to 400°F and line a baking sheet with parchment paper or lightly grease it.
02 - Pat the salmon fillets dry and season evenly with salt and pepper on both sides. Arrange fillets skin-side down on the baking sheet.
03 - Combine soy sauce, honey, mirin, rice vinegar, sesame oil, garlic, and ginger in a small saucepan. Warm over medium heat until it simmers gently.
04 - Mix the cornstarch with cold water and stir into the simmering sauce. Cook, stirring constantly, until glaze thickens, about 1 to 2 minutes. Remove from heat.
05 - Brush half of the teriyaki glaze over the salmon fillets evenly.
06 - Bake the fillets for 12 to 15 minutes, depending on thickness, until cooked through and flaky.
07 - Remove from oven, brush with remaining glaze, then sprinkle with toasted sesame seeds and sliced green onions.
08 - Serve immediately, optionally accompanied by lime wedges.