Avocado halves filled with tuna, tomato, red onion and cilantro bound with mayonnaise. Nothing gets cooked and it takes ten minutes.

The avocado is the bowl
Which means it has to be ripe enough to eat with a spoon and firm enough to hold its shape when filled. Press near the stem: it should give slightly and no more.
Scoop out a little of the flesh to enlarge the hollow, and chop that into the filling rather than throwing it away.
Lime on the avocado, not just in the filling
The recipe squeezes the lemon juice into the tomato and onion mixture, which is fine, but the surface that browns is the cut avocado.
Brush the halves as soon as they are exposed. Acid slows the enzyme that darkens the flesh, and an avocado left cut on the counter goes grey within twenty minutes.
Drain the tuna properly
Tuna in oil or in water both work, but either way it needs draining thoroughly. Wet tuna makes a filling that slides out of the avocado and pools on the plate.
Press it against the side of the tin with a fork before it goes in the bowl. Two large tins is roughly 300 g drained, which fills six halves generously.
Assemble late
This is a dish to put together shortly before eating. Even with lime the cut surfaces darken over a couple of hours, and the filling releases water into the avocado.
The filling itself can be made several hours ahead and kept in the fridge, which is the practical way to do it for guests: mix early, fill at the last minute.
More avocado
- Avocado salad — the same ingredients, loose.
- Avocado sauce — thinner, for pouring.
- Deviled eggs with tuna — the same filling, different vessel.
- Tuna salad — where the rest of the tin goes.
- Colombian picadillo — what goes inside them.
Stuffed Avocados FAQ
Ripe enough to eat with a spoon and firm enough to hold their shape as a bowl. Press near the stem: it should give slightly and no more. Very soft avocados collapse when you fill them.
Brush the cut surfaces with lime or lemon juice the moment you halve them, not at the end. The acid slows the enzyme responsible. Left alone, cut avocado darkens noticeably within twenty minutes.
Around 300 g drained in total, which fills six halves generously. Tin sizes vary a great deal between countries, which is why the weight is more useful than the count.
Make the filling ahead and keep it in the fridge, but fill the avocados just before serving. Even with lime the cut surfaces darken over a couple of hours and the filling releases water into them.
Shredded chicken is the usual Colombian alternative and works with exactly the same mixture. Cooked prawns also work. Whatever it is, drain it well or the filling slides out.
📖 Recipe

Ingredients
- 3 ripe avocados (ripe but firm enough to hold their shape as a bowl)
- Juice of ½ lemon (some for the filling, some brushed on the cut avocado)
- 1 ripe tomato
- ¼ cup red onion
- 2 large cans of tuna (about 300 g drained in total)
- 3 tablespoons mayonnaise
- Cilantro (chopped)
- A pinch of salt and pepper
Notas
Instructions
- In a bowl, mix the drained tuna with the mayonnaise and a pinch of salt and pepper.
- Dice the tomato and the onion finely, add them to a bowl with the lemon juice and the chopped cilantro.
- Combine the tuna mixture with the tomato and onion, and stir until evenly mixed.
- Halve the avocados and carefully remove the stone and the skin. Brush the cut surfaces with a little of the lemon juice so they do not darken.
- Scoop out a little of the flesh with a spoon to make the hollow slightly bigger.
- Fill each half with the mixture, without overfilling.
- Serve as a side dish or a starter.

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