Butter-Roasted Halibut with Asparagus and Olives

A elegant seafood dish featuring tender halibut roasted with spring vegetables in a fragrant butter sauce, topped with a bright olive and herb mixture. The fish is accompanied by asparagus, ramps, and Castelvetrano olives for a perfect blend of flavors.

6 servings
45 min

Ingredients

  • 2 bunches asparagus
  • 6 Tbsp unsalted butter
  • 7 Tbsp extra-virgin olive oil
  • 1 tsp Aleppo-style pepper
  • lb skinless halibut
  • to taste kosher salt and pepper
  • 2 bunches ramps
  • ¾ cup Castelvetrano olives
  • ¼ cup chives
  • ¼ cup lemon juice
  • 2 Tbsp tarragon
  • for serving potatoes and lemon wedges

Cooking Instructions

  1. 1.

    Preheat oven to 325°F. Thinly slice one-quarter of asparagus into coins and place in a medium bowl; set aside.

    5 min

  2. 2.

    Heat butter and 2 Tbsp. oil in a small saucepan over medium. As soon as butter is melted, add Aleppo-style pepper and remove from heat.

    5 min

  3. 3.

    Season fish with salt and black pepper on both sides and place on a rimmed baking sheet. Scatter ramps and remaining asparagus around fish; season with salt and black pepper. Pour butter mixture over fish and vegetables. Give vegetables a toss to evenly coat. Roast, undisturbed, until fish is just opaque in the center and asparagus is bright green and tender, 15-25 minutes, depending on the thickness of your fillets.

    25 min

  4. 4.

    Toss olives, chives, lemon juice, 2 Tbsp. tarragon, and remaining 5 Tbsp. oil with reserved asparagus; season with salt and black pepper.

    5 min

  5. 5.

    Transfer fish to a platter; top with ramps and asparagus. Spoon some olive mixture over, then scatter tarragon leaves over. Serve with potatoes, lemon wedges, and remaining olive mixture alongside.

    5 min