Top-ranked recipe named "White Bean and Tuna Salad"
Yet another recipe with infinite options, add whatever you like, remove items you don't. It's pretty hard to mess up and pretty easy to make vegetarian (and still healthy, hearty and full of protein).
Chop, prepare and open accordingly and mix everything together seasoning with salt and pepper.
This is what I had on hand when I made the salad, leave out the artichokes and possibly the tomatoes if you want a more traditional version. I like volume and variety.
Things I would love to try in different combinations with those listed in the recipe:
basically any fresh herbs
herbed goat cheese
sun dried tomatoes
olive oil (if using tuna packed in water)
italian dressing (instead of oil and vinegar)
ranch dressing (if feeding children who only eat food with ranch (I actually don't want to try this at all))