Cod in papillote is the healthiest and easiest recipe to prepare: you wrap the cod with vegetables and aromatics in baking paper, put it in the oven for 20 minutes, and it's ready. No added fat, no dirty pans, and the result is incredibly juicy cod that cooks in its own steam. 10 minutes of preparation. Serves 4.
What is en papillote cooking?
En papillote cooking (from the French papillote, paper butterfly) consists of wrapping food in baking paper or aluminum foil, sealing it hermetically, and baking it. The oven's heat turns the moisture from the food and vegetables into steam, which cooks everything inside the sealed packet.
It is the healthiest cooking technique for fish: you don't need oil (although a drizzle improves the flavor), there is no contact with hot surfaces, and nutrients are fully preserved because there is no loss through evaporation or immersion in water.
Cod is perfect for papillote because it is lean (0.7% fat) and needs moisture to prevent drying out. The steam trapped inside the packet maintains a juiciness that other techniques cannot achieve with white fish.
Ingredients (serves 4)
- 4 desalted cod loins (150-200 g each)
- 1 zucchini, thinly sliced
- 1 red bell pepper, cut into strips
- 1 onion, thinly sliced into rings
- 8 cherry tomatoes, halved
- 4 tablespoons extra virgin olive oil
- 4 thin lemon slices
- Fresh thyme (or rosemary)
- Salt and pepper
Step-by-step cod en papillote recipe
Step 1: Prepare the vegetables
Cut the zucchini into 3mm slices, the bell pepper into thin strips, and the onion into rings. Halve the cherry tomatoes. The vegetables should be thin so they cook at the same time as the cod.
Step 2: Assemble the papillotes
Cut 4 rectangles of baking paper, about 40x30 cm. In the center of each rectangle, place a layer of vegetables (zucchini, bell pepper, onion). Place a cod loin over the vegetables. Add cherry tomatoes, a lemon slice, and a sprig of thyme on top. Drizzle with 1 tablespoon of extra virgin olive oil and season with salt and pepper.
Step 3: Seal the papillotes
Fold the paper in half, covering the cod. Start from one corner and fold the edge over itself every 2-3 cm, creating pleats that seal the packet. The seal must be airtight — steam cannot escape.
Step 4: Bake
Preheat the oven to 200°C (390°F). Place the papillotes on a baking sheet and bake for 18-20 minutes. The packets should puff up from the steam — that's the sign that it's working.
Step 5: Serve
Serve the sealed papillotes on plates. Each diner should open theirs at the table — the aroma that escapes upon opening is part of the experience. Be careful of hot steam when opening.
How to properly seal the papillote
The seal is the most important part of the technique. If it opens during baking, steam escapes and the cod dries out.
Pleat method: Fold the paper in half. Starting from one corner, make 2-3 cm triangular pleats, overlapping them (each pleat covering part of the previous one). Finish by twisting the last corner under the packet.
Candy wrapper method: Simpler. Gather the edges of the paper above the cod and tie them with kitchen twine, like a candy wrapper. Less elegant but just as effective.
With aluminum foil: If using foil instead of baking paper, simply press the edges together firmly. Aluminum seals more easily, but baking paper gives a more aesthetic result.
Best vegetables for cod en papillote
The ideal vegetables for papillote are those that cook quickly and release moisture:
- Perfect: Zucchini, cherry tomatoes, thin asparagus, thin green beans, bell pepper, thinly sliced onion rings, leek.
- Work well: Sliced mushrooms, spinach, olives, canned artichokes.
- Avoid: Potatoes (take too long), thick carrots, sweet potatoes. If you want potatoes, pre-cook them for 5 minutes.
Tips for perfect cod en papillote
1. Thin vegetables. If the vegetables are thick, they won't cook in time. Slices should be 3mm maximum.
2. Don't overfill the packet. One layer of vegetables + one cod loin + topping. If you put too much, steam won't circulate, and cooking will be uneven.
3. A dash of liquid. Extra virgin olive oil is essential. You can substitute part of it with white wine, fish broth, or even lemon juice. Liquid generates extra steam and adds flavor.
4. Preheat oven. Put the papillotes into an oven already at 200°C (390°F). If you put them in a cold oven, cooking will be slow and uneven.
5. Don't open to check. If you open the papillote halfway through, you lose the steam. Trust the timing: 18-20 minutes at 200°C (390°F) for 150-200g loins.
5 cod en papillote variations
Provençal: Tomato, black olives, basil, garlic, and extra virgin olive oil. Intense Mediterranean flavor.
Asian: Grated ginger, soy sauce, sesame, bok choy, and lime. Aromatic and different.
With pesto: A spoonful of Genovese pesto over the cod before sealing. Heat intensifies the basil aroma.
With ham: A thin slice of Iberian ham wrapped around the cod. The ham fat bastes the lean loins. A classic Spanish combination.
Minimalist: Just cod, lemon, thyme, and extra virgin olive oil. For purists who want to savor the cod without distractions.
Nutritional value per serving
| Nutrient | Per serving |
|---|---|
| Calories | 240 kcal |
| Protein | 32 g |
| Fat | 10 g |
| Carbohydrates | 6 g |
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Conclusion
Cod en papillote is the perfect everyday recipe: healthy, quick, mess-free, and results in a juicy dish that other white fish techniques can't match. 10 minutes of prep, 20 minutes in the oven, a complete meal with vegetables included.
It's also an ideal recipe for dieting — 240 kcal with 32 g of protein — and for effortlessly impressing: each diner opens their packet at the table, and the aroma that escapes is pure restaurant-quality cooking.
Frequently asked questions
How long do you bake cod en papillote?
18-20 minutes at 200°C (390°F) for 150-200g loins. If they are thicker, up to 25 minutes.
Is baking paper or aluminum foil better for papillote?
Both work. Baking paper is more aesthetic, and there's no metal-food contact (preferable with acids like lemon). Aluminum seals more easily.
Can you make cod en papillote from frozen?
Yes, but add 5-8 more minutes of baking time. It works better if thawed in the refrigerator beforehand.
Is papillote good for dieting?
Excellent. It doesn't require additional oil (though a drizzle improves it), preserves all nutrients, and a serving has only 240 kcal with 32 g of protein.
What fish is best for papillote?
Lean white fish: cod, hake, sea bass, sea bream, sole. Papillote provides the moisture these fish need. Oily fish (salmon) also work but don't need as much help.
Can papillote be prepared in advance?
Yes. Assemble the packets and store them in the refrigerator for up to 4 hours. Take them out 15 minutes before baking so they are not too cold.
Maria José Sáez Pastor
Chef and recipe creator for Bacalalo.com. Specialist in seafood cuisine with accessible techniques for everyday cooking. From Mercat del Ninot, Barcelona.
