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There’s something incredibly satisfying about opening a parchment packet at the table and letting all those bright Mediterranean aromas escape. This Mediterranean Cod en Papillote is light, fresh, and packed with flavor — yet it feels almost effortless to prepare. The cod steams gently in its own juices along with lemon, olives, tomatoes, and thyme, creating a tender, flaky result every time.

If you’re looking for a wholesome weeknight dinner that feels a little special but doesn’t require complicated techniques, this is it. Everything cooks together in one neat parchment bundle, locking in moisture and infusing the fish with vibrant, savory flavor.

Why You’ll Love This Recipe

Light yet deeply flavorful
Naturally gluten-free and heart-healthy
Quick 30-minute dinner
Minimal cleanup thanks to parchment packets
Elegant enough for guests, easy enough for weeknights
Customizable with your favorite Mediterranean vegetables

Ingredients You’ll Need

Tip: You’ll find the full list of ingredients and measurements in the recipe card below.

1 medium zucchini, thinly sliced into half-moons
4 (6-ounce) cod filets, patted dry
Kosher salt, to taste
Freshly ground black pepper, to taste
2 lemons, thinly sliced
1 small shallot, thinly sliced
4 sprigs fresh thyme
20 olives, halved or quartered
20 grape tomatoes, halved
2 tablespoons extra-virgin olive oil

Let’s Get Started

Preheat your oven to 400°F (200°C). Cut four large sheets of parchment paper, about 12–15 inches long. If needed, fold each sheet in half and cut into a heart shape for easy sealing later.
Place a small handful of sliced zucchini in the center of each parchment sheet. This creates a bed for the cod and helps prevent sticking while adding subtle moisture.
Pat the cod filets dry with paper towels, then season both sides generously with kosher salt and freshly ground black pepper. Lay one filet on top of each zucchini bed.
Top each piece of cod with a few slices of lemon, a few slices of shallot, 5 olives, and 5 halved grape tomatoes. The vegetables should surround the fish without overcrowding it.
Drizzle each filet evenly with extra-virgin olive oil, about 1½ teaspoons per packet. Finish with a sprig of fresh thyme placed directly on top.
Fold the parchment over the fish and begin sealing the edges by making small overlapping folds, crimping tightly to create a sealed packet. Make sure there are no gaps so the steam stays inside.
Transfer the packets to a baking sheet and bake for 12–15 minutes. The fish is done when it flakes easily with a fork and appears opaque throughout. Be careful not to overcook — cod becomes dry if left too long.
Remove from the oven and let the packets rest for 2–3 minutes. Carefully open each packet (watch for hot steam) and serve immediately.

Servings and Pairing

This recipe serves four, making it perfect for a family dinner or small gathering. Serve the packets directly on plates for a beautiful presentation.

Pair with warm crusty bread, fluffy couscous, lemon rice, or a simple arugula salad. A sparkling water with lemon or a light white wine complements the bright Mediterranean flavors beautifully.

Variations

Swap cod for halibut, sea bass, or salmon (adjust cook time as needed).
Add thinly sliced fennel for a subtle anise note.
Include capers for extra briny flavor.
Use cherry tomatoes instead of grape tomatoes.
Sprinkle with fresh parsley or basil after baking for extra freshness.

Storage Tips

Store leftover cod in an airtight container in the refrigerator for up to 2 days. Reheat gently in a 300°F oven until just warmed through to prevent drying out. This dish is best enjoyed fresh, as the fish is most tender right after cooking.

Freezing is not recommended once baked, as the vegetables may release excess moisture during thawing.

FAQs

Can I prepare the packets ahead of time?

Yes. Assemble the parchment packets up to 6 hours ahead and refrigerate. Bake just before serving.

How do I know when cod is fully cooked?

The fish should be opaque and flake easily with a fork. Internal temperature should reach 145°F.

Can I cook this on the grill?

Yes. Place sealed packets on a preheated medium grill and cook for about 10–12 minutes, keeping the lid closed.

What if I don’t have parchment paper?

You can use foil instead, though parchment creates a gentler steaming environment and prevents sticking.

Final Thoughts

Mediterranean Cod en Papillote is proof that simple ingredients can create beautifully balanced flavor. The combination of lemon, thyme, olives, and tomatoes enhances the mild cod without overpowering it. It’s fresh, nourishing, and feels special every time you open that parchment bundle.