01 -
Wash and drain the cooked lentils. Finely chop the red onion and fresh parsley.
02 -
Stir the mayonnaise, mustard, parsley, lemon zest and juice, and olive oil together. Season with salt and pepper to taste.
03 -
In a large mixing bowl, gently combine the lentils, flaked tuna, red onion, and dressing. Use extra parsley for garnish.