
Rinse and drain the beans. Halve the tomatoes, dice the cucumber, and thinly slice the onion.
Whisk the oil, lemon juice, vinegar, oregano, 1/2 tsp salt, and pepper in a big bowl.
Add the beans, vegetables, olives, and chopped parsley and toss.
Let it sit 5 minutes so the beans soak up the dressing, then flake the tuna over the top in big chunks and drizzle with some of its oil. No cooking needed.
Photo: DinnerDrop