Ingredients

  • 4 6 -ounce skinless arctic char fillets (about 1 inch thick)
  • Kosher salt and freshly ground pepper
  • 4 tablespoons extra-virgin olive oil, plus more for drizzling
  • 8 ounces white button mushrooms, sliced
  • 2 shallots, finely chopped
  • 2 tablespoons red wine vinegar, plus more for drizzling
  • 2 teaspoons whole-grain mustard
  • 1 tablespoon chopped chives
  • 1 tablespoon chopped fresh parsley
  • 2 bunches arugula, trimmed

Method

  • Preheat the oven to 350 degrees.
  • Season the fish with salt and pepper.
  • Heat 1 tablespoon olive oil in a large nonstick skillet over medium-high heat until shimmering.
  • Add the fish and sear until golden on the bottom and cooked halfway through, about 3 minutes.
  • Flip onto a baking sheet and bake until cooked through, 3 to 5 more minutes.
  • Meanwhile, wipe out the skillet, return to medium-high heat and add the remaining 3 tablespoons oil.
  • Add the mushrooms and cook, without stirring, until browned on one side, about 1 minute.
  • Stir and cook until browned all over, about 3 more minutes.
  • Add the shallots and cook until soft, stirring, about 2 minutes.
  • Whisk in 2 tablespoons vinegar and the mustard and bring to a boil.
  • Remove from the heat and stir in the chives and parsley.
  • Drizzle the arugula with oil and vinegar in a bowl, season with salt and pepper and toss.
  • Divide among plates and serve with the fish.
  • Spoon the mushrooms and pan juices on top.
  • Per serving: Calories 376; Fat 19 g (Saturated 3 g); Cholesterol 80 mg; Sodium 399 mg; Carbohydrate 14 g; Fiber 1 g; Protein 38 g
  • Photograph by Antonis Achilleos