Ingredients

• 1 3/4 pounds halibut fillet (1 1/2 inches thick)
• 3 garlic cloves
• 2 tablespoons extra-virgin olive oil
• 1/3 cup mayonnaise
• Accompaniment: lemon wedges

Instructions

1. Preheat oven to 450°F with rack in middle.
2. Put fish in an oiled shallow baking dish and sprinkle with teaspoon each of salt and pepper.
3. Force garlic through a garlic press into a bowl, then whisk in oil and 1/8 teaspoon salt. Whisk in mayonnaise and spread over fish.
4. Bake, uncovered, until fish is just cooked through, 10 to 15 minutes.