Baked Cod and Summer Squash in Foil Packets Recipe

A perfect easy fish dinner for a solo diner or big party.

By
Yasmin Fahr
Yasmin Fahr: Contributing Writer at Serious Eats
Yasmin Fahr is a food writer, recipe developer and author of the cookbook Keeping it Simple. She has a penchant for cheesy phrases, lemons, fresh herbs, feta and cumin.
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Updated June 16, 2023
Overhead shot of green and yellow zucchini slices, sliced red onion, and thyme sprigs layered over cod in an open foil packet.

Serious Eats / Yasmin Fahr

Why It Works

  • The fish and vegetables steam inside individual foil packets, making this a quick-cooking main course that's easy to serve and clean up.
  • White wine adds aroma and moisture to the packets.

Cooking for one can be a difficult task, especially as most recipes are designed to serve four. Plus, as one recipe writer once said to me, "A cooking-for-one column can feel a little depressing." (I think she was sick of the one she was writing. Fair enough.) Well, be depressed no longer, single folks, because I have a recipe here that is so easy to scale and portion that you can buy and prep the exact amount you need, whether for one, two, three, four, or fourteen. Plus it's dead easy to make, and counts as a one-pot dish, which means I'm ready to declare this one a triple threat.

Living alone, I understand the challenge of having too many leftovers, especially when testing recipes that need to feed multiple people. But when I'm looking for a quick dinner that's just for me, this technique of steaming fish in a foil pouch is perfect.

This is, more or less, a recipe for fish en papillote, though en papillote technically requires a parchment-paper wrapper. Parchment looks prettier than foil when the paper browns (a sign that it's close to being done), but when I'm cooking for myself, foil is my go-to material because I always have some on hand and am too lazy to cut the paper—pathetic, I know, but no one knows but me!

When thinking about this recipe, salmon was my first idea, but I realized that ensuring the salmon was cooked medium-rare was a lot harder with it wrapped up. Enter cod, a light and mild white fish that cooks quickly, perfect for absorbing the fresh herbs and splash of white wine it's cooked with here.

It's important to seal the packet well to trap steam and cook what's inside, but be careful when opening it as the steam will rush out.

August 2014

Recipe Details

Baked Cod and Summer Squash in Foil Packets Recipe

Prep 5 mins
Cook 10 mins
Active 15 mins
Total 15 mins
Serves 4 servings

Ingredients

  • 4 (6-ounce) cod fillets or other mild white-fleshed fish

  • 2 medium zucchini, sliced into thin rounds

  • 2 medium yellow summer squash, sliced into thin rounds

  • 1 medium red onion, thinly sliced

  • Kosher salt and freshly ground black pepper

  • Crushed red pepper flakes, for sprinkling

  • 2 tablespoons extra-virgin olive oil

  • 2 tablespoons dry white wine

  • 1 lemon, thinly sliced

  • 4 sprigs fresh thyme

  • 1 tablespoon fresh juice from 1 lemon

Directions

  1. Preheat the oven to 450°F (230°C). Season fish with salt and pepper. Arrange 4 large sheets of aluminum foil on a work surface and set 1 fish fillet on each piece of foil. Arrange zucchini, squash, and onion around each fillet and season with salt and pepper. Sprinkle fish and vegetables with red chile flakes. Drizzle 1/2 tablespoon oil and 1/2 tablespoon wine onto vegetables and fish.

  2. Arrange a few lemon slices on top of each fillet and top with a thyme sprig. Wrap foil around fish and vegetables, leaving some air space within each packet, and seal very well. Set packets on a rimmed baking sheet and bake for 8 minutes. Carefully open 1 packet to confirm fish is just cooked through; if not, re-seal packet and return to oven to continue cooking until cooked through. Serve right away, opening packets at the table.

Special Equipment

Aluminum foil, rimmed baking sheet

Notes

This recipe can easily be scaled up or down to serve as many or as few people as you like.

Read More

Nutrition Facts (per serving)
307Calories
9gFat
33gCarbs
31gProtein
×
Nutrition Facts
Servings: 4
Amount per serving
Calories307
% Daily Value*
Total Fat 9g11%
Saturated Fat 1g7%
Cholesterol 80mg27%
Sodium 839mg36%
Total Carbohydrate 33g12%
Dietary Fiber 9g30%
Total Sugars 15g
Protein 31g
Vitamin C 129mg646%
Calcium 119mg9%
Iron 2mg13%
Potassium 1247mg27%
*The % Daily Value (DV) tells you how much a nutrient in a food serving contributes to a daily diet. 2,000 calories a day is used for general nutrition advice.
(Nutrition information is calculated using an ingredient database and should be considered an estimate.)

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