Step 1

Preheat oven to 400 degrees and spray a large baking sheet with cooking spray or line with foil.

Step 2

Scatter the baking sheet with the onions, tomatoes and olives then top with the salmon filet. Place lemon slices on top of the salmon in a single layer. Drizzle with olive oil, salt, pepper and oregano then lightly toss the veggies to coat.

Step 3

Bake until fish flakes easily with a fork, 16-18 minutes.