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Cod Baked in Foil with Zucchini and Tomatoes

By America's Test Kitchen

Published on January 5, 2009

Time

50 minutes

Yield

Serves 4

Cod Baked in Foil with Zucchini and Tomatoes

Ingredients

1 pound zucchini (2 medium), ends trimmed and sliced crosswise into ¼-inch-thick roundsTable salt ½ pound plum tomatoes (2 medium), cored, seeded, and chopped into ½-inch pieces (about 1 cup)2 tablespoons extra virgin olive oil 2 medium garlic cloves, minced or pressed through a garlic press (about 2 teaspoons)1 teaspoon minced fresh oregano leaves ⅛ teaspoon red pepper flakes Ground black pepper 4 tablespoon vermouth or dry white wine4 skinless cod fillets, 1 to 1 ¼ inches thick (about 6 ounces each)¼ cup minced fresh basil leaves 1 lemon, cut into wedges

Before You Begin

Haddock, red snapper, halibut, and sea bass also work well in this recipe and those that follow as long as the fillets are 1 to 1¼ inches thick. The packets may be assembled several hours ahead of time and refrigerated until ready to cook. If the packets have been refrigerated for more than 30 minutes, increase the cooking time by 2 minutes. Open each packet promptly after baking to prevent overcooking.

Instructions

  1. Toss zucchini with ½ teaspoon salt in large bowl; transfer to colander set over bowl. Let stand until zucchini releases 1 to 2 tablespoons liquid, about 30 minutes. Arrange zucchini on triple layer paper towels; cover with another triple layer paper towels. Firmly press each slice to remove as much liquid as possible. Meanwhile, combine tomatoes, oil, garlic, oregano, red pepper flakes, ¼ teaspoon salt, and 1/8 teaspoon pepper in medium bowl.
  2. Adjust oven rack to lower-middle position and heat oven to 450 degrees. Cut eight 12-inch sheets of foil; arrange four flat on counter. Distribute salted zucchini among foil sheets, mounding in center of each. Pour 1 tablespoon vermouth over each mound of vegetables. Pat fish dry with paper towels; season with salt and pepper and place one fillet on top of each vegetable mound. Spoon quarter of tomato mixture over each fillet. Place second square of foil on top of fish; crimp edges together in ½-inch fold, then fold over three more times to create a packet about 7 inches square (see related Step-By-Step). Place packets on rimmed baking sheet (overlapping slightly if necessary).
  3. Bake packets 15 minutes. Carefully open foil, allowing steam to escape away from you. Using thin metal spatula, gently slide fish and vegetables onto plate with any accumulated juices; sprinkle with basil. Serve immediately, passing lemon wedges separately.
Cod Baked in Foil with Zucchini and Tomatoes
Photography by Daniel J. van Ackere. Styling by Catrine Kelty.

Cod Baked in Foil with Zucchini and Tomatoes

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By America's Test Kitchen
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Time

50 minutes

Yield

Serves 4

Ingredients

1 pound zucchini (2 medium), ends trimmed and sliced crosswise into ¼-inch-thick rounds
Table salt
½ pound plum tomatoes (2 medium), cored, seeded, and chopped into ½-inch pieces (about 1 cup)
2 tablespoons extra virgin olive oil
2 medium garlic cloves, minced or pressed through a garlic press (about 2 teaspoons)
1 teaspoon minced fresh oregano leaves
⅛ teaspoon red pepper flakes
Ground black pepper
4 tablespoon vermouth or dry white wine
4 skinless cod fillets, 1 to 1 ¼ inches thick (about 6 ounces each)
¼ cup minced fresh basil leaves
1 lemon, cut into wedges

Test Kitchen Techniques

Ingredients

1 pound zucchini (2 medium), ends trimmed and sliced crosswise into ¼-inch-thick rounds
Table salt
½ pound plum tomatoes (2 medium), cored, seeded, and chopped into ½-inch pieces (about 1 cup)
2 tablespoons extra virgin olive oil
2 medium garlic cloves, minced or pressed through a garlic press (about 2 teaspoons)
1 teaspoon minced fresh oregano leaves
⅛ teaspoon red pepper flakes
Ground black pepper
4 tablespoon vermouth or dry white wine
4 skinless cod fillets, 1 to 1 ¼ inches thick (about 6 ounces each)
¼ cup minced fresh basil leaves
1 lemon, cut into wedges

Test Kitchen Techniques

Ingredients

1 pound zucchini (2 medium), ends trimmed and sliced crosswise into ¼-inch-thick rounds
Table salt
½ pound plum tomatoes (2 medium), cored, seeded, and chopped into ½-inch pieces (about 1 cup)
2 tablespoons extra virgin olive oil
2 medium garlic cloves, minced or pressed through a garlic press (about 2 teaspoons)
1 teaspoon minced fresh oregano leaves
⅛ teaspoon red pepper flakes
Ground black pepper
4 tablespoon vermouth or dry white wine
4 skinless cod fillets, 1 to 1 ¼ inches thick (about 6 ounces each)
¼ cup minced fresh basil leaves
1 lemon, cut into wedges

Test Kitchen Techniques

Why This Recipe Works

For a foil-baked fish recipe with flaky fish and tender but firm vegetables flavored by the rich, aromatic goodness of their mingled juices, we chose mild haddock or cod over more assertive salmon or tuna, which can overpower vegetables. Placing the packets on the lower-middle rack of the oven close to the heat source concentrated the exuded liquid and deepened its flavor. Vegetable selection was important (potatoes failed to cook evenly in the packets, and eggplant turned to mush), as was preparation (carrots and leeks could be added raw but fennel had to be wilted slightly in the microwave). Adding a final flavoring touch—a tomato and olive oil “salsa” or a compound butter—contributed to a full-flavored sauce that perfectly complemented the fish.

Before You Begin

Haddock, red snapper, halibut, and sea bass also work well in this recipe and those that follow as long as the fillets are 1 to 1¼ inches thick. The packets may be assembled several hours ahead of time and refrigerated until ready to cook. If the packets have been refrigerated for more than 30 minutes, increase the cooking time by 2 minutes. Open each packet promptly after baking to prevent overcooking.

Instructions

  1. Toss zucchini with ½ teaspoon salt in large bowl; transfer to colander set over bowl. Let stand until zucchini releases 1 to 2 tablespoons liquid, about 30 minutes. Arrange zucchini on triple layer paper towels; cover with another triple layer paper towels. Firmly press each slice to remove as much liquid as possible. Meanwhile, combine tomatoes, oil, garlic, oregano, red pepper flakes, ¼ teaspoon salt, and 1/8 teaspoon pepper in medium bowl.
  2. Adjust oven rack to lower-middle position and heat oven to 450 degrees. Cut eight 12-inch sheets of foil; arrange four flat on counter. Distribute salted zucchini among foil sheets, mounding in center of each. Pour 1 tablespoon vermouth over each mound of vegetables. Pat fish dry with paper towels; season with salt and pepper and place one fillet on top of each vegetable mound. Spoon quarter of tomato mixture over each fillet. Place second square of foil on top of fish; crimp edges together in ½-inch fold, then fold over three more times to create a packet about 7 inches square (see related Step-By-Step). Place packets on rimmed baking sheet (overlapping slightly if necessary).
  3. Bake packets 15 minutes. Carefully open foil, allowing steam to escape away from you. Using thin metal spatula, gently slide fish and vegetables onto plate with any accumulated juices; sprinkle with basil. Serve immediately, passing lemon wedges separately.

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