This recipe for Provençal Tuna Sandwich, Salad, or Crostini No Mayonnaise is a healthy, delicious way to enjoy canned tuna. The dish is inspired by the flavors of Provence, a region in southern France known for its fresh herbs, olive oil, and balsamic vinegar. The recipe uses a mix of diced vegetables and a tangy dressing to add depth of flavor to the tuna, making it a satisfying meal or appetizer. Whether enjoyed on toasted bread as a sandwich, over greens as a salad, or on crostinis as an appetizer, this recipe is sure to please.