Tuna and Onion Puff Pastry Pie is a rustic and flavorful one-dish meal made with a golden puff pastry crust and a rich filling of sweet stewed onions, tuna, cherry tomatoes, olives, raisins, and provolone cheese.
Perfect for lunch, dinner, picnics, or gatherings, this savory pie combines Mediterranean ingredients to create a dish that is both comforting and elegant. The contrast between the crisp pastry and the soft, aromatic filling makes every slice incredibly satisfying.
Why Everyone Will Love This Recipe
This puff pastry pie is packed with layers of flavor. The slow-cooked onions become naturally sweet, balancing the savory tuna, briny olives, and melted provolone cheese. Cherry tomatoes add freshness, while raisins provide a subtle sweet note that makes the filling unique.
It’s also a practical recipe that can be served warm or at room temperature, making it ideal for busy weeknight dinners, buffet tables, or outdoor meals.
What Is Tuna and Onion Puff Pastry Pie?
Tuna and Onion Puff Pastry Pie is inspired by Mediterranean savory pies, particularly Italian recipes that combine seafood, vegetables, and pastry into rustic dishes designed to use simple, seasonal ingredients. Similar preparations can be found in southern Italian and Sicilian cuisine, where onions, tuna, olives, raisins, and tomatoes are often combined to create sweet-and-savory flavor contrasts.
The use of raisins alongside savory ingredients reflects an ancient Mediterranean culinary tradition influenced by Arab cuisine, which introduced combinations of dried fruit, spices, and seafood to regions such as Sicily. Puff pastry adds a more modern European element, creating a crisp, buttery shell around a richly flavored filling.
Cooking Tips
- Cook the onions slowly over low heat because this allows their natural sweetness to develop and creates a softer, more flavorful filling without burning them.
- Add water gradually while cooking the onions to help them soften evenly and prevent them from sticking to the bottom of the pan.
- Allow the onion mixture to cool completely before adding the tuna because warm filling can soften the puff pastry and affect its crisp texture during baking.
- Drain the tuna thoroughly before mixing it with the filling to prevent excess moisture from making the pastry base soggy.
- Soak the raisins before adding them to the filling because this softens their texture and helps them blend better with the other ingredients.
- Prick the puff pastry with a fork before baking to allow steam to escape and help create a more even, crisp crust.
- Leave a small border around the edges when adding the filling so the pastry sheets can seal properly and prevent the filling from leaking during baking.
- Brush the pastry with egg and milk before baking to achieve a shiny, golden surface with an appetizing finish.
Frequently Asked Questions
Can I Use Fresh Tuna Instead of Canned Tuna?
Yes, cooked fresh tuna can be used, although canned tuna is traditional for this type of quick savory pie because it provides convenience and a strong savory flavor.
Can I Replace Provolone Cheese?
Yes, mozzarella, scamorza, fontina, or another melting cheese can be used depending on the flavor and texture you prefer.
Can I Add Other Vegetables?
Yes, bell peppers, zucchini, spinach, or mushrooms can be added to the filling, but make sure vegetables are cooked and drained well to avoid excess moisture.
Why Are Raisins Added to the Filling?
Raisins add a subtle sweetness that balances the salty tuna, olives, and cheese. This sweet-and-savory combination is common in many Mediterranean recipes, especially those influenced by Sicilian cuisine.
Can I Serve This Pie Cold?
Yes, this savory pie can be enjoyed warm, at room temperature, or cold, making it a convenient option for picnics and packed lunches.
How to Store
Store the tuna and onion puff pastry pie in an airtight container in the refrigerator for up to 2 days. Reheat slices in the oven at a low temperature to help restore the crisp texture of the pastry.
How to Freeze
Freeze the baked pie once completely cooled by wrapping it tightly in plastic wrap and placing it in a freezer-safe container for up to 1 month. Thaw in the refrigerator and reheat in the oven until warm and crispy before serving.
Ingredients
How to Make Tuna and Onion Puff Pastry Pie
;Resize,width=712;)
Pour a drizzle of extra virgin olive oil into the pan, put on the heat and add the sliced onions, season with salt and add the bay leaf.
Pour a drizzle of extra virgin olive oil into the pan, put on the heat and add the sliced onions, season with salt and add the bay leaf.
;Resize,width=712;)
Stir with a wooden spoon, browning the onions briefly. Add a couple of inches of water.
Stir with a wooden spoon, browning the onions briefly. Add a couple of inches of water.
;Resize,width=712;)
Continue cooking over low heat, cover with the lid and cook for about 25 minutes. Check occasionally and add more water if necessary.
Continue cooking over low heat, cover with the lid and cook for about 25 minutes. Check occasionally and add more water if necessary.
;Resize,width=712;)
Cut the cherry tomatoes in half and add them to the pan with the stewed onions, together with the pitted olives.
Cut the cherry tomatoes in half and add them to the pan with the stewed onions, together with the pitted olives.
;Resize,width=712;)
Stir and continue cooking for a few minutes, until all the liquids have dried up. Remove the onions from the heat and let them cool.
Stir and continue cooking for a few minutes, until all the liquids have dried up. Remove the onions from the heat and let them cool.
;Resize,width=712;)
Add the well-drained tuna, a handful of previously soaked and squeezed raisins, season with oregano and mix well.
Add the well-drained tuna, a handful of previously soaked and squeezed raisins, season with oregano and mix well.
;Resize,width=712;)
Place the puff pastry rectangle with its baking paper on the baking tray and prick the pastry with a fork.
Place the puff pastry rectangle with its baking paper on the baking tray and prick the pastry with a fork.
;Resize,width=712;)
Stuff with the tuna and onion mixture and distribute it evenly, leaving about 2 cm free between the filling and the edges, and add the grated provolone on top.
Stuff with the tuna and onion mixture and distribute it evenly, leaving about 2 cm free between the filling and the edges, and add the grated provolone on top.
;Resize,width=712;)
Cover with the second rectangle of puff pastry. Prick the surface and seal the edges by folding them inward and pressing with the prongs of a fork.
Cover with the second rectangle of puff pastry. Prick the surface and seal the edges by folding them inward and pressing with the prongs of a fork.
;Resize,width=712;)
Beat the egg with the milk in a small bowl and brush the entire surface of the rustic pastry.
Beat the egg with the milk in a small bowl and brush the entire surface of the rustic pastry.
;Resize,width=712;)
Cook in a preheated static oven at 395°F/200°C for approximately 25 minutes, or until golden brown on the surface.
Cook in a preheated static oven at 395°F/200°C for approximately 25 minutes, or until golden brown on the surface.
Once cooked, let it cool before cutting it into squares and serving it. Enjoy!
Once cooked, let it cool before cutting it into squares and serving it. Enjoy!
;Resize,width=767;)
