Step 1: Prepare the Marinade

1. In a small mixing bowl, whisk together the miso paste, soy sauce, mirin, rice vinegar, honey, sesame oil, ginger, and garlic until smooth.

Step 2: Marinate the Salmon

1. Pat the salmon fillets dry with a paper towel. Place them in a shallow dish or resealable plastic bag.
2. Pour the miso marinade over the salmon, ensuring each fillet is well-coated. Cover the dish or seal the bag, then refrigerate for at least 1 hour, or up to 4 hours for more intense flavor.

Step 3: Preheat the Oven

1. Preheat your oven to 375°F (190°C). Line a baking sheet with parchment paper or aluminum foil for easy cleanup.

Step 4: Bake the Salmon

1. Remove the salmon from the marinade, letting excess marinade drip off. Arrange the fillets on the prepared baking sheet.
2. Bake for 12–15 minutes, depending on the thickness of the fillets, or until the salmon flakes easily with a fork and reaches an internal temperature of 145°F (63°C).

Step 5: Garnish and Serve

1. Transfer the baked salmon to serving plates. Garnish with sesame seeds and green onions, if desired.
2. Serve with lemon wedges on the side for a burst of freshness.