01 - Preheat oven to 400°F. Line a baking sheet with parchment paper and set aside.
02 - In a small saucepan over medium heat, combine tamari, maple syrup, rice vinegar, sesame oil, garlic, and ginger. Bring to a gentle simmer, stirring occasionally.
03 - Whisk in the cornstarch slurry and cook for 1 to 2 minutes, whisking constantly, until the sauce thickens to a glossy glaze. Remove from heat.
04 - Arrange the salmon fillets on the prepared baking sheet. Brush each fillet generously with the teriyaki glaze using a pastry brush, coating all exposed surfaces.
05 - Bake for 12 to 15 minutes, or until the salmon is opaque throughout and flakes easily with a fork. For extra caramelization, switch to broil for the final 2 minutes of cooking.
06 - Drizzle the remaining teriyaki sauce over the cooked fillets. Sprinkle with toasted sesame seeds and sliced green onions. Serve with lemon wedges on the side.