Tuna is a good source of omega-3 fatty acids, which may protect against heart disease, high blood pressure, and many cancers. Capers bring Mediterranean flair -- and antioxidants -- to this dish.
Combine tuna, diced celery, lemon zest and juice, almonds, oil, capers, and 1/4 teaspoon salt in a bowl. Season with pepper, and stir gently. Mix in dill and celery leaves. Serve tuna over greens with toast on the side.