items you will need
Preheat your oven to 400 degrees Fahrenheit.
Rinse off each trevally fillet with cold running water and pat dry with paper towels. Tear off sheets of aluminum foil large enough to wrap each fillet in. Place a fillet in the center of the foil and drizzle with olive oil and lemon juice. Add additional seasonings to taste or include vegetables like tomatoes and onions.
Fold the aluminum foil around the fillet and seal tightly. Arrange the foil packets on a baking sheet, leaving a little space between each packet.
Bake for approximately 20 minutes, or until the fish flakes easily with a fork. Remove from the oven and serve immediately.