Step 1

Lay four 12x16-inch pieces of aluminum foil on a flat work surface. Place a piece of fish in the center of each piece of foil.

Step 3

In a medium bowl, stir together the tomatoes, bell pepper, onion, garlic, olive oil, salt and pepper. Top each piece of fish with an equal amount of the vegetables.

Step 5

To seal each packet, turn the piece of foil so that the 16-inch side is horizontal. Fold the right and left ends toward the center to meet each other. Roll the foil down two to three turns to seal the two sides. Grab each of the open ends and roll towards the center to create and seal the packet.

Step 7

Place on a baking sheet and bake for 15 to 20 minutes, until the fish begins to flake and the vegetables are softened.