01 -
Drain and rinse the cooked lentils thoroughly. Finely chop the fresh parsley and the red onion.
02 -
In a small bowl, combine the mustard, mayo, parsley, olive oil, and lemon juice and zest. Add salt and pepper to taste.
03 -
In a large mixing bowl, gently stir together the lentils, flaked tuna, chopped onion, and the prepared dressing. Top it off with some extra parsley if you like.