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 the tamari, maple syrup, rice vinegar, sesame oil, minced garlic, and grated ginger. Bring the mixture to a gentle simmer.
03 - Whisk the cornstarch slurry into the simmering sauce. Continue whisking constantly for 1–2 minutes until the glaze thickens to a glossy coating consistency. Remove from heat.
04 - Arrange the salmon fillets on the prepared baking sheet. Brush each fillet generously with the thickened teriyaki glaze using a pastry brush, ensuring even coverage.
05 - Bake for 12–15 minutes until the salmon turns opaque and flakes easily when tested with a fork. For a caramelized finish, switch to broil for the final 2 minutes.
06 - Drizzle the remaining teriyaki sauce over the cooked fillets. Sprinkle with toasted sesame seeds and sliced green onions. Serve accompanied by lemon wedges if desired.