Broiled Halibut with Orange- Shallot Butter Sauce

Ingredients

• 1 stick (1/4 lb.) unsalted butter
• 1 large shallot, minced
• 3/4 teaspoon kosher salt
• 1/2 cup fresh orange juice
• 2 tablespoons white wine vinegar
• 1/4 teaspoon pepper
• 4 (6- to 8 oz.) halibut or cod fillets
• Half-moon orange slices, for garnish

Preparation

1. Preheat broiler. In a medium saucepan, melt 1 Tbsp. butter over medium heat. Add shallot and 1/2 tsp. salt and cook, stirring, until softened, about 3 minutes. Pour in orange juice and vinegar and bring to a boil. Cook until thick and syrupy, about 5 minutes. Remove from heat.
2. On a shallow baking pan, arrange fish, smooth-side down; sprinkle with remaining 1/4 tsp. salt and pepper. Broil for about 6 minutes, until fish is just cooked through. Transfer fish to a platter and keep warm.
3. Return reserved orange-shallot mixture to a simmer over medium heat. Gradually add remaining 7 Tbsp. butter, whisking in a little at a time until incorporated and warm, about 5 minutes. Pour the sauce over the fish and serve. Garnish with orange slices.