Red Snapper al Cartoccio
Red Snapper al Cartoccio: Simple Mediterranean Seafood Cooking
Red Snapper al Cartoccio is one of the simplest and most elegant ways to cook fish.
Fresh red snapper is baked inside parchment paper with tomatoes, onions, olives, olive oil, parsley, and lemon, allowing everything to steam together gently while the flavors naturally combine.
The parchment traps moisture and creates its own sauce inside the packet, keeping the fish delicate, tender, and incredibly flavorful without needing heavy ingredients or complicated techniques.
It’s the kind of dish that feels light, fresh, and perfect for warmer weather while still carrying the bold Mediterranean flavors that define so much of Southern Italian seafood cooking.
If you enjoyed this recipe, be sure to check out my Linguine alle Vongole, Shrimp Scampi, and Zuppa di Mussels recipes for more classic Italian seafood dishes.
Watch How I Make It
Watch how Red Snapper al Cartoccio comes together step-by-step.
Why This Version Works
Cooking fish en papillote — or “al cartoccio” — creates a gentle steam environment that keeps the snapper moist and delicate throughout cooking.
The tomatoes release natural juices, the olive oil forms a light sauce, and the onions soften directly into the broth as everything cooks together inside the parchment.
Because the ingredients are sealed tightly inside the packet, the fish absorbs all of the aromatics while still remaining the focus of the dish.
The Tradition Behind Fish al Cartoccio
Cooking seafood al cartoccio is common throughout coastal regions of Italy, especially in Southern Italy and along the Mediterranean.
The technique focuses on preserving the natural flavor and texture of fresh seafood while building flavor through olive oil, citrus, herbs, vegetables, and briny ingredients like olives or capers.
Rather than relying on heavy sauces, dishes like this highlight simplicity and freshness — two foundations of traditional Italian seafood cooking.
Technique & Texture
The most important part of cooking red snapper al cartoccio is creating a tightly sealed parchment packet.
A proper seal traps steam inside the parchment, allowing the fish to cook gently while the vegetables soften and release their juices into the sauce.
Thinly sliced onions are also important because they cook quickly enough to soften fully during the short baking time.
Fresh parsley added at the end helps brighten the entire dish and reinforces the freshness that defines simple Mediterranean seafood cooking.
The result should be tender fish with a light, fragrant broth formed naturally inside the parchment.
Why Olive Oil Matters Here
Because this dish relies on very few ingredients, good olive oil becomes especially important.
The olive oil combines with the juices from the tomatoes, fish, and onions to create a light sauce inside the parchment packet without needing butter or cream.
Layering olive oil throughout the dish also helps carry the flavor of the lemon zest, oregano, parsley, and olives into the fish itself while it steams.
Red Snapper al Cartoccio
Ingredients
Method
- Preheat oven to 400°F.
- In a mixing bowl, combine: cherry tomatoes, thinly sliced onion, Kalamata olives, parsley, oregano, salt and black pepper and extra virgin olive oil
- Toss well to combine and let sit for 2–3 minutes.
- Fold each sheet of parchment paper in half, then reopen flat. On one side of each parchment sheet spoon a small layer of the tomato mixture onto the parchment
- Place each red snapper fillet over the tomato mixture. Season lightly with salt and pepper.
- Divide the remaining tomato mixture over the fish.
- Top each packet with a little fresh lemon zest and another light drizzle of extra virgin olive oil.
- Fold the parchment over the fish to form a half-moon shape. Starting at one edge, tightly crimp and fold the parchment to completely seal the packet. The tighter the seal, the better the steam environment.
- Place the packets on a baking sheet and bake for 12–15 minutes, depending on the thickness of the fish. The parchment should slightly puff as the fish steams inside.
- Carefully open the parchment packets (watch for steam). Finish with fresh parsley
Chef’s Notes
- Thinly sliced onions are key for proper texture.
- Layering olive oil throughout the dish creates a natural sauce inside the parchment.
- Lemon zest brightens the entire dish without overpowering the snapper.
- A tight parchment seal is critical for proper steaming.
Red Snapper al Cartoccio Questions
What does al cartoccio mean?
Al cartoccio refers to cooking food inside parchment paper so it steams gently while baking.
Can I use another fish besides snapper?
Yes. Branzino, cod, halibut, or striped bass all work well.
Why use parchment paper?
Parchment traps steam and keeps the fish moist and delicate.
Can this be made ahead of time?
The packets can be assembled ahead and baked just before serving.
