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Tuna salad sandwich on a white plate, garnished with tomato slices and green onions, set against a neutral background.

Healthy Tuna Salad Sandwich Recipe Packed with Flavor

This tuna salad sandwich, made with flaky tuna, fresh vegetables, and creamy mayonnaise on buttery croissants, is the best healthy tuna salad sandwich for a quick and satisfying meal!
Prep Time 20 minutes
Total Time 20 minutes
Course Main Course
Cuisine American
Servings 4 sandwiches

Ingredients
  

  • 14 ounces canned tuna drained well (about 2 cans)
  • 3 green onions sliced (white and green parts)
  • 1/4 cup dill pickles diced
  • 1 stalk celery diced
  • 1/3 cup real mayonnaise
  • Salt to taste
  • Black pepper to taste
  • 4 croissants
  • Optional toppings: tomato slices, cucumber slices, lettuce, pickles, or mild pepper rings

Instructions
 

  • Drain the canned tuna thoroughly and transfer it to a large mixing bowl.
  • Add the sliced green onions, diced dill pickles, and celery.
  • Mix in the mayonnaise, then season with salt and black pepper to taste. Stir until well combined.
  • Scoop the tuna salad mixture evenly onto the croissants. Top with optional toppings like tomato slices, lettuce, or mild pepper rings if desired.
  • Serve immediately and enjoy your homemade tuna salad on croissants fresh and cold.