Weeknight Dinners and Sides, AUGUST/SEPTEMBER 2024

Flounder With Creole Mustard Sauce

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  • Level: Easy
  • Total: 35 min
  • Active: 35 min
  • Yield: 4 servings
Flounder is a fish that makes the perfect blank canvas for a spiced coating and assertive sauce. Rubbed with Cajun seasoning then quickly sautéed, the fish is served with a classic butter sauce, called a beurre blanc, here flavored with grainy mustard. Simply cooked spinach is the perfect vegetable to tame this seafood dinner with a kick.

Ingredients

Directions

  1. Combine the shallot, wine and vinegar in a small saucepan. Simmer until mostly reduced but not completely dry, 6 to 8 minutes. Add the heavy cream and simmer until slightly thickened, about 1 minute. Reduce the heat to medium-low and whisk in the butter, a few cubes at a time, until combined into a slightly thick sauce. Stir in the mustard and season with salt and pepper. If the sauce seems too thick, whisk in water, 1 teaspoon at a time. Remove from the heat and keep warm.
  2. Put the spinach in a pot with 1/4 cup water. Cook over high heat, tossing, until just wilted, 2 to 3 minutes. Season with salt and pepper and transfer to a paper towel–lined plate to drain.
  3. Season the fish with salt, pepper and the Cajun seasoning. Heat the vegetable oil in a large nonstick skillet over high heat until shimmering. Add 2 fish fillets and cook until golden brown and crisp on 1 side, about 3 minutes. (Reduce the heat if the pan starts to get too hot.) Carefully flip the fish and cook about 1 more minute on the other side. Remove to a baking sheet, cover loosely with foil and repeat with the remaining 2 fillets.
  4. Divide the sauce among plates and top with the fish fillets. Serve with the spinach and lemon wedges.

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