How to Make It
Heat oven to 450° F. On a rimmed baking sheet, toss the peppers, onion, and bread with the oil. Nestle salmon fillets in the mixture; season with ¾ teaspoon salt and ¼ teaspoon pepper. Roast until the salmon is opaque throughout and the vegetables are tender, 8 to 10 minutes. Serve topped with the pesto.