Prep the Pantry Goods: Drain the tuna and rinse the cannellini beans. Add both to a medium mixing bowl.
1 can, 1 can
Chop the Onion: Dice the red onion into small pieces. If your onion is on the smaller side, feel free to slice it thin instead. Add to the bowl with the tuna and beans.
¼ cup red onion
Season Like a Pro: Sprinkle in the salt and pepper. Stir gently to mix everything together without mashing the beans.
½ teaspoon salt, ¼ teaspoon black pepper
Add That Olive Oil: Drizzle in the olive oil and give it another gentle stir to coat everything evenly.
1 tablespoon extra virgin olive oil
Toss in the Herbs: Chop up the parsley and mix it in for a fresh, green kick.
2 tablespoons chopped flat-leaf parsley
Make It Zingy: Right before serving, add the lemon juice or cherry tomatoes to brighten things up. Optional—but highly recommended if you've got them.
1 tablespoon fresh lemon juice or ½ cup halved cherry tomatoes
Serve and Enjoy: Scoop onto plates or eat straight from the bowl. It’s chill, it’s quick, and it tastes way better than it has any right to.