Baked Tuna Potato Stuffed Bell Peppers

Tuna Potato Stuffed Bell Peppers are an easy-to-prepare and very tasty dish, perfect to stuff with your favorite ingredients or those you have at home. We opted for a creamy tuna and potato filling, but they can be made in many variations: just think of peppers stuffed with meat, rice or stuffed with ricotta, a lighter version that is also suitable for vegetarians.

You can use red, green or yellow peppers: the important thing is that they are firm, fleshy and without bruises. The ideal varieties are jolly or magnum, characterized by a square shape and therefore suitable for stuffing.

After removing the cap and cleaning the peppers, they are stuffed with a filling of boiled potatoes, mashed and mixed with tuna in oil, parsley and capers, then baked in the oven at 390°F/200°C for about 40 minutes; once baked, we recommend that you let them cool to enjoy them at room temperature or even cold: they will be even tastier and more fragrant.

What Are Tuna Potato Stuffed Bell Peppers?

Stuffed bell peppers have long been a staple in American kitchens, often filled with ground beef, rice, and tomato sauce—a comfort food beloved across generations. But the variation featuring tuna and potatoes, as seen in Mediterranean cuisines like Italy’s, brings a refreshing twist to this classic. From an American perspective, this version nods to the country's melting pot roots, where immigrant traditions enrich the culinary landscape. Italian-American communities, especially in the Northeast, have preserved and adapted such recipes, incorporating local ingredients and seasonal availability. Tuna-stuffed peppers showcase a lighter, coastal influence that aligns with America’s growing interest in seafood-based dishes and global flavors, transforming a humble vegetable into a savory delight that bridges continents and culinary histories.

Pro Tips for The Best Tuna Potato Stuffed Bell Peppers

• Opt for medium-sized bell peppers that can stand upright and have a firm, glossy skin. Red or yellow peppers are sweeter and complement the tuna flavor beautifully.
• Boil the potatoes until they’re fork-tender but not mushy. This ensures they mash easily and absorb the flavors without becoming watery.
• Select good-quality tuna in olive oil—preferably Italian or Spanish brands—as it adds richness and authenticity to the filling.
• For a heartier bite, leave some small potato chunks in the mash instead of making it completely smooth. It adds a rustic feel and satisfying texture.
• After baking, allow the peppers to rest for 10 minutes. This helps the flavors meld and makes them easier to serve.

Should I Pre-Cook the Peppers Before Stuffing Them?

Pre-cooking the peppers before stuffing is optional but highly recommended for the best texture. Parboiling or roasting them for 5–10 minutes softens the flesh, making them more tender and flavorful after baking. It also shortens the overall cooking time and ensures the peppers are fully cooked by the time the filling is heated through. If you prefer a firmer bite, you can skip this step—but for that melt-in-your-mouth finish, pre-cooking is a smart move.

What Else Can I Add to The Filling?

You can enrich the pepper filling with sliced ​​onion, chopped dried tomatoes, pine nuts or a few anchovy fillets in oil. To make the filling stringy, add provola or another cheese of your choice. For a light variant, use canned tuna in water.

You can replace the parsley with dried oregano, basil leaves, thyme or flavor the filling with the spices you like most. Adding a sprinkling of breadcrumbs before baking the peppers will give them a delicious crunchy crust.

Can I Use Another Protein?

For lovers of strong flavors, you can also try a filling made with potatoes and sausage: just remove the casing from the sausage, cook it in a pan for a few minutes and then add it to the boiled and mashed potatoes. Once stuffed, bake them at 390°F/200°C and cook for about 40 minutes.

For a vegetarian variant, however, you can replace the tuna with scamorza, mozzarella, another stretched curd cheese or even tofu, cut into cubes and mixed with the rest of the filling.

Can I Air Fry Them, Instead of Baking?

Yes, you can! Air frying is a great alternative that can save time and still deliver crispy edges and a well-cooked filling. Preheat your air fryer to 180°C (356°F), then cook the stuffed peppers for about 12–15 minutes, checking halfway through. Depending on your air fryer’s size, you may need to cook in batches. To prevent burning, you can cover the tops loosely with foil for the first half of the cooking time. It’s a quicker, energy-efficient method with deliciously satisfying results.

What Can I Serve Them With?

These peppers pair well with a crisp green salad, a light tomato coulis, or even a slice of crusty bread to mop up the juices.

Can I Make Them Ahead of Time?

Yes! You can prepare the entire dish—stuffing and all—a day in advance and store the uncooked peppers in the fridge, tightly covered. When you're ready, simply bake or air fry them as usual.

Do They Freeze Well?

Stuffed bell peppers with tuna and potatoes don’t freeze particularly well, mainly because of the potatoes. Freezing can cause the potatoes to become grainy or watery when thawed, which affects the overall texture and flavor of the dish.

How to Store Tuna Potato Stuffed Bell Peppers

To store leftovers of stuffed bell peppers with tuna and potatoes, let them cool completely at room temperature, then place them in an airtight container. Store in the refrigerator for up to 3 days.

For best flavor and texture, reheat in the oven at 180°C (356°F) for about 10–15 minutes or until warmed through. You can also microwave them for a quicker option—just cover them with a microwave-safe lid or wrap to retain moisture.

How to Make Tuna Potato Stuffed Bell Peppers

Wash the potatoes, removing any soil with a brush and then put them to boil in plenty of salted water.

Let them cool in the cooking water, then peel them.

Mash the potatoes with a potato masher and season them with a drizzle of oil and a pinch of salt.

Drain the tuna, crumble it with a fork, then add it to the potatoes.

Also add the parsley and capers, roughly chopped.

Mix with a spoon until you get a smooth cream.

Wash the peppers under fresh running water and dry them with kitchen paper, then remove the top cap.

Clean the inside of each pepper, removing seeds and internal white ribs.

Place the peppers in an oiled baking tray, or one lined with baking paper, lightly salt the inside and stuff them with the potato and tuna mixture.

Place the caps on the stuffed peppers.

Season the surface of the caps with a drizzle of oil and a pinch of salt. Cook in a static oven at 390°F/200°C for approximately 40 minutes or in a fan oven at 360°F/180°C for approximately 30 minutes.

The peppers will be ready when their pulp is soft and the surface is golden.

Remove the caps and add the pitted olives on the surface.

Let them cool, then enjoy them!