This main dish salad is perfect for lunch or a light dinner. Dill, quinoa, and Parmesan cheese are optional. I make the salad without these, then add them to change things up a bit when we eat the leftovers. Serve by itself or over lettuce.
For optimal flavor, use high-quality olive oil and balsamic vinegar; consider oil-packed tuna for a richer taste. If using fresh dill, add it at the end. To enhance texture, lightly toast pine nuts or sunflower seeds and sprinkle on top just before serving. For a milder onion flavor, finely dice and rinse it in cold water. Allow the salad to rest for 15-30 minutes in the refrigerator before serving to let the flavors meld. Be gentle when stirring to maintain the integrity of the beans and tuna.