01 -
Preheat oven to 400°F and position the rack in the upper third. Line a baking sheet with aluminum foil and spray lightly with cooking spray.
02 -
Pat Arctic char dry with paper towels and place skin-side down on the prepared baking sheet.
03 -
Combine Dijon mustard, brown sugar, lemon juice, garlic powder, salt, and pepper in a small bowl until uniform.
04 -
Evenly spread the mustard mixture over the top surface of each fish piece.
05 -
Bake uncovered for 10 to 15 minutes or until the fish flakes easily with a fork, checking at 10 minutes for approximately 1/2-inch thickness.
06 -
Sprinkle chopped fresh parsley and adjust seasoning with additional salt and pepper as desired. Slide off skin before serving, as it will not crisp.