Place Brussels sprouts and onions on a large sheet pan. Drizzle with 2 tablespoons olive oil and season with salt and pepper to taste. Toss to coat.
Spread out in an even layer and turn Brussels sprouts cut side down for perfect roasting. Bake for about 15-18 minutes, or until vegetables are tender.
While vegetables are roasting, prepare the seasoning mixture for the salmon. In a small bowl, mix together 2 tablespoons olive oil, minced garlic, Italian seasoning, ½ teaspoon salt and ¼ teaspoon pepper. Set aside.
Carefully remove pan from the oven. Give the vegetables a stir and nestle the salmon in the center of the pan in between the vegetables. Spoon the seasoning mixture over the salmon, spreading it evenly with the back of the spoon. Make sure each fillet is well coated with the mixture.
Bake for another 10-15 minutes, or until salmon is cooked through and the vegetables are caramelized. If desired, you can broil for 1-2 minutes for a crispy top. Garnish with chopped parsley and lemon slices, if desired.
Notes
Line with parchment or foil for easy cleanup. Broiling for 1-2 minutes after baking gives a caramelized crispy exterior while keeping the interior of the salmon moist and tender. It also creates a slight char on the vegetables. Garnish with parsley and lemon slices for a fresh look and taste!Look for fresh fish, ones that are firm to the touch and are pink or orange in color. Avoid any fish that is foul-smelling because that is a sure sign that it's not fresh. Roasting salmon at a high heat is a great way to cook salmon. It will get crispy on the outside while remaining tender, flaky and juicy on the inside. Take care not to overcook to avoid dry salmon. A good internal temperature for salmon is 145°F.