In a medium mixing bowl, whisk together ¼ cup of maple syrup, 2 tablespoons of grainy mustard, 2 tablespoons of Dijon mustard, 2 tablespoons of white miso paste, 1 tablespoon of rice vinegar, 2 tablespoons of soy sauce, and 2 cloves of grated garlic until smooth and well-combined.

Place the salmon fillets in a shallow baking dish and generously brush the prepared marinade over each fillet, ensuring they are fully coated. Marinate in the refrigerator for at least 30 minutes.

Preheat your oven to 400°F (200°C) while the salmon is marinating.

Once preheated, place the marinated salmon fillets on the prepared baking sheet, skin-side down, and bake for about 10 minutes.

Carefully remove the Miso Dijon Salmon from the oven and optionally drizzle with any leftover marinade before serving.