Open two cans of Bumble Bee tuna and drain the liquid thoroughly. Place the drained tuna in a large mixing bowl and use a fork to flake the tuna into smaller pieces.

Add a scoop of mayonnaise, a splash of zesty Italian dressing, and a dollop of mustard. Gently mix until well combined.

Fold in the minced onion and chopped celery, mixing gently for about a minute until well incorporated.

Add garlic powder, salt, and black pepper, mixing until the seasoning is evenly distributed.

Serve the salad immediately on toasted bread or lettuce wraps, or chill in the refrigerator for about 30 minutes for optimal flavor.