Preheat and prep. Heat your oven to 425°F (220°C).
Line a sheet pan with foil or parchment for easy cleanup. Lightly oil the surface.
Make the glaze. In a bowl, whisk together miso, soy sauce, honey, rice vinegar, ginger, garlic, and sesame oil. The mixture should be smooth and spreadable.
If it’s too thick, add 1 teaspoon of water.
Pat the salmon dry. Use paper towels to remove surface moisture. Dry fish browns better and helps the glaze cling.
Coat the salmon. Spread a generous layer of glaze over the top and sides of each fillet. Reserve 1–2 tablespoons of glaze for a final brush after baking.
Roast. Place the fillets on the prepared pan, skin-side down if using skin-on. Bake for 8–12 minutes, depending on thickness.
You’re aiming for slightly translucent centers and flaking flesh.
Optional broil for color. For deeper caramelization, switch to broil for the last 1–2 minutes. Watch closely to avoid burning the glaze.
Rest and finish. Let the salmon rest for 3 minutes. Brush with the reserved glaze for shine. Sprinkle with sesame seeds and scallions if you like.
Serve. Plate with rice or greens.
A squeeze of lime wakes up the flavors.