"Tray Baked White Fish with Sicilian Fresh Tomato Sauce | Rachael Ray"

Ingredients

• 2 ½ pounds thick cod or halibut
• Juice of 1 lemon
• Salt and pepper
• 1 small red onion, very thinly sliced by hand or mandolin
• 2 boxes cherry tomatoes, halved
• 5 cloves garlic, 4 very thinly sliced or chopped and 1 halved for charred bread
• ½ cup pitted green Cerignola olives, coarsely chopped
• ½ cup pitted black olives (oil-cured or kalamta), coarsely chopped
• ¼ cup capers in brine, drained and coarsely chopped
• ¼ cup chopped flat-leaf parsley
• 2 tablespoons chopped fresh oregano
• 2 teaspoons fennel seeds or pollen or combination of each
• 1 teaspoon red pepper flakes
• About ¼ cup EVOO, plus more for drizzling on bread
• 1 loaf ciabatta bread, halved horizontally
• Flaky sea salt