Add all of the marinade ingredients to a bowl and whisk to blend. Reserve 2 tablespoons to brush over the cooked cod.
Place your cod onto a dish and use a paper towel to pat the cod dry. Dust with salt and pepper to taste.
Place the cod and marinade into a dish. Be sure the miso glaze is coating all of the fish.
Cover and place in the refrigerator for at least 30 minutes.
Preheat the oven to 375º F.
Line a baking dish with parchment paper and place the marinated cod on the paper. This will make clean up so much easier!
Bake for 10-15 minutes. The actual bake time will vary depending on how thick your cod pieces are. You will know the cod is finished baking when it feels firm to the touch and flakes easily.
Brush the remaining glaze on top of the cod and squeeze lime juice over the fish. Serve warm.
