Miso Butter Halibut with Shiitake and Bok Choy

This miso butter halibut is a one-skillet dinner that delivers restaurant-quality flavor in under 30 minutes. Thick halibut fillets are seared until golden, then bathed in a bubbling miso butter glaze with shiitake mushrooms and baby bok choy.

The combination of savory miso, sweet butter, and fresh ginger creates a rich, umami-packed sauce that clings to every flaky bite. Finished with scallions and toasted sesame, this dish is perfect for a weeknight but impressive enough for company.

This recipe turns a simple piece of halibut into a memorable meal. The halibut is scored and seared in a hot cast iron skillet until it develops a golden crust, then it is basted with a miso butter that melts into a glossy, savory glaze.

Shiitake mushrooms add an earthy depth, while baby bok choy brings a fresh, crisp contrast. A shower of scallions and sesame seeds finishes the dish with brightness and nuttiness. The entire meal comes together in one pan, making cleanup a breeze.

Ingredients

Why this recipe works

Searing the halibut in a hot cast iron skillet creates a deep golden crust that locks in moisture and adds a rich, caramelized flavor.

The high heat also ensures the fish cooks quickly, preventing it from drying out. Scoring the fillets increases the surface area, allowing the miso butter to penetrate and flavor every bite.

The miso butter is the heart of this dish. White miso, with its mild, sweet, and salty profile, blends seamlessly into softened butter, creating a sauce that is both savory and indulgent.

As the butter bubbles, it emulsifies with the pan juices, forming a glossy glaze that clings to the fish and vegetables. The fresh ginger adds a bright, aromatic note that balances the richness.

Notes and substitutions

Use the freshest halibut you can find. Pacific halibut is ideal for its mild, sweet flavor and firm texture. If halibut is unavailable, cod or sea bass are excellent substitutes. Look for fillets that are thick and evenly cut so they cook uniformly.

White miso, also known as shiro miso, is the best choice here because it is milder and sweeter than red or yellow miso. It is available in the refrigerated section of most supermarkets. If you only have yellow miso, reduce the amount slightly to avoid overpowering the dish.

• Pacific halibut: Atlantic halibut, cod, or sea bass can be used; adjust cooking time based on thickness.
• Shiitake mushrooms: Cremini or oyster mushrooms work well if shiitake are unavailable.
• Baby bok choy: Regular bok choy, cut into wedges, or baby choy sum can be substituted.
• White miso: Yellow miso can be used for a slightly stronger flavor; reduce to 1 1/2 tablespoons.

Equipment

• Box grater
• Cutting board
• Chef's knife
• Cast iron skillet
• Fish spatula
• Measuring spoons
• Small bowl