Heat the oven to 400°F. Spray a 9x13 baking dish with cooking spray.

Oil the cod with olive oil and season both sides with salt and pepper.

Add the tomatoes to a mixing bowl and add olive oil, salt, and pepper. Stir to completely coat the tomatoes.

Place the cod in the baking pan. You can cut it in pieces if the entire filet doesn't fit. Sprinkle the garlic, tarragon, and parsley on top of the fish. Cut the butter in 4 pieces and place the pieces on various parts of the fish as well.

Pour wine and tomatoes around the fish.

Place the pan in the oven and cook for 20 minutes. Take it out to check it. Use a fork at the thickest part and slightly twist it to separate the meat. If it flakes easily and the translucent appearance is gone, it's done. It it still looks raw, cook for another 5 minutes until the fish is fully cooked.