01 - Preheat the oven to 400°F. Line a baking sheet with parchment paper or lightly grease it.
02 - Pat the cod fillets dry with paper towels. Season both sides lightly with salt and pepper.
03 - In a small bowl, whisk together the miso paste, maple syrup, soy sauce, rice vinegar, sesame oil, garlic, and ginger until smooth.
04 - Place the cod fillets on the prepared baking sheet. Spoon or brush the miso maple glaze generously over the tops of the fillets.
05 - Bake for 12–15 minutes, or until the cod is opaque and flakes easily with a fork. Thicker fillets may require slightly longer.
06 - Remove from the oven and transfer to serving plates. Garnish with green onions, sesame seeds, and lime wedges if desired.