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Mediterranean tuna-stuffed tomatoes are ripe tomatoes hollowed out and packed with a simple mix of canned tuna, hard-boiled egg, olives, and capers, much like the herby rice filling in Greek gemista stuffed tomatoes. The tomato stays juicy and slightly sweet, while the filling brings salt and tang from the olives and capers. It’s a light lunch you can put together in about 20 minutes of hands-on work, with almost no cooking beyond boiling two eggs.
I like this recipe for hot days when I don’t want to turn on the oven. The tomato does double duty as the bowl and part of the meal, so there’s less to wash up after.
You do not need anything special for this recipe. Canned tuna in olive oil, a jar of capers, and whatever olives you have in the fridge are enough to make a filling that tastes like more work than it is.
One thing I’ve learned from testing this a few times: don’t skip draining the hollowed tomatoes. Skip that step and the filling turns watery within an hour.
Why You’ll Love This Recipe
- Ready in about 45 minutes, mostly no cooking
- Uses pantry staples like canned tuna and capers
- No oven needed on hot summer days
- Tomato doubles as the bowl and the meal
Ingredient Notes
- Tomatoes: Pick firm, ripe tomatoes that can stand upright once hollowed. Beefsteak or large vine tomatoes work best since they hold enough filling.
- Tuna: I use tuna packed in olive oil for more flavor, but water-packed tuna works too if you drain it well.
- Capers: These add a salty, briny bite. If you don’t have any, chopped green olives can stand in, though the flavor will be milder.
- Mayonnaise: Plain Greek yogurt or extra olive oil can replace the mayonnaise for a lighter, tangier filling.
- Hard-boiled eggs: These bulk up the filling and add protein. You can leave them out if you want a lighter, egg-free version.
Tuna-Stuffed Tomatoes: A Simple Mediterranean Lunch
Ingredients
Method
- Place the eggs in a 1.5-quart / 1.4 L saucepan and cover with cold water. Bring to a boil, then turn off the heat, cover, and let sit for 10 minutes. Drain, cool under cold water, peel, and chop.
- While the eggs cook, slice the top off each tomato and use a small spoon to scoop out the seeds and pulp, leaving a wall about 1 cm / 0.4 inch thick. Save the pulp for soup or sauce if you like.
- Season the inside of each tomato shell with a pinch of the salt, then turn the shells upside down on a paper towel-lined plate. Let them drain for 10 minutes so the filling doesn't turn watery.
- In a mixing bowl, combine the drained tuna, chopped eggs, olives, capers, and red onion.
- Add the mayonnaise, lemon juice, and parsley to the bowl. Mix gently until everything is coated, then season with salt and pepper and taste before adding more.
- Pat the inside of the tomato shells dry with a paper towel if any liquid has collected. Spoon the tuna filling into the tomatoes, mounding it slightly on top.
- Drizzle the stuffed tomatoes with the extra virgin olive oil and tear a few basil leaves over the top.
- Chill for 15 minutes before serving, or serve right away if you like the tomatoes at room temperature.
Notes
- Drain hollowed tomatoes upside down for 10 minutes to avoid a watery filling.
- Taste the filling before adding salt, canned tuna and capers are already salty.
- Use ripe but firm tomatoes so the shells hold their shape.
- Chill briefly before serving for the best texture and flavor.
Tips for Success
- Choose firm, ripe tomatoes that can stand upright on their own, or slice a thin base so they don’t tip over.
- Drain the hollowed tomato shells upside down on paper towels for 10 minutes to stop the filling from turning watery.
- Chop the olives and capers finely so every bite of filling gets a little of their salty flavor.
- Taste the tuna mixture before adding extra salt, since capers, olives, and canned tuna are already salty.
- Chill the stuffed tomatoes for 15 minutes before serving so the flavors settle and the filling firms up a bit.
Variations
- Swap the mayonnaise for plain Greek yogurt or extra olive oil for a lighter, tangier filling.
- Add diced cucumber or bell pepper to the tuna mix for extra crunch and a fresher bite.
- Use cherry tomatoes instead of large ones and make bite-size appetizers for a party platter.
Storage and Reheating
Mediterranean tuna-stuffed tomatoes are best eaten the same day you make them, ideally within a few hours of stuffing. The tomatoes soften and release liquid the longer they sit filled, so the texture gets mushy by the next day.
If you want to prep ahead, make the tuna filling up to 2 days in advance and keep it covered in the fridge. Hollow out and stuff the tomatoes only when you’re ready to eat, so the shells stay firm.
Leftover stuffed tomatoes can sit in an airtight container in the fridge for up to 1 day, though the tomato will be softer. This dish doesn’t freeze well, since tomatoes turn watery and mushy once thawed.
Serving Suggestions
Serve Mediterranean tuna-stuffed tomatoes as a light lunch with a slice of crusty bread on the side to soak up the juices. A simple green salad with lemon and olive oil rounds out the plate without adding much extra work.
For a starter or party spread, use smaller tomatoes and set them out alongside hummus, olives, and pita for a Mediterranean-style spread. They also pair well with a chilled glass of white wine on a warm evening.
FAQ
Why are my tuna-stuffed tomatoes watery?
Watery filling usually means the tomatoes weren’t drained after hollowing. After you scoop out the seeds and pulp, turn the tomato shells upside down on a paper towel for 10 minutes so the extra juice drains out. Salting the inside lightly before filling also helps pull out moisture before you add the tuna mix.
Can I use canned salmon instead of tuna in this recipe?
Yes, canned salmon works well in place of tuna. Drain it the same way and flake it with a fork before mixing with the eggs, olives, and capers. The flavor turns a bit richer and pinker, but the rest of the recipe stays the same.
Can I make Mediterranean tuna-stuffed tomatoes ahead of time?
You can prep the tuna filling up to 2 days ahead and store it covered in the fridge. Wait to hollow and stuff the tomatoes until an hour or two before serving, since cut tomatoes get soft and release liquid the longer they sit filled.
What goes with tuna-stuffed tomatoes for a light lunch?
Crusty bread, a simple green salad, or a bowl of orzo pasta all work well alongside these stuffed tomatoes. I also like serving them with a wedge of lemon and extra olive oil on the side for anyone who wants more brightness on their plate.
Are Mediterranean tuna-stuffed tomatoes gluten free?
Yes, this recipe is gluten free as written, since there’s no bread, flour, or pasta in the filling. Just double check your mayonnaise and canned tuna labels, since some brands add fillers or flavorings that contain gluten.
What is the difference between tuna-stuffed tomatoes and a Nicoise salad?
Tuna-stuffed tomatoes pack the same Mediterranean ingredients, tuna, eggs, olives, and capers, into a hollowed tomato instead of spreading them over lettuce like a Nicoise salad. It’s a portable, single-serving version of that combination, with the tomato acting as both the bowl and part of the meal.