With some guidance, you can find sandwiches that pack plenty of protein without unnecessary calories, fat, or sodium. That's why we turned to registered dietitian Mary Sabat, MS, RDN, LD, for her ...
Stir in the tuna, onion, olives and capers. Divide the tuna mixture between 4 bread slices. Top with the lettuce and remaining bread slices. Tip: This recipe can be halved to make 2 servings.