Scoop tuna salad into hollowed cucumber halves. This low carb snack is fresh, crunchy, and solves the bread problem elegantly.
Slice each cucumber in half lengthwise and use a spoon to scoop out the seeds, creating a hollow boat shape.
Place the cucumber boats on a paper towel, cut-side down, to let excess moisture drain as you prepare the filling.
In a mixing bowl, combine the drained tuna, finely diced celery, finely chopped red onion, mayonnaise, lemon juice, dijon mustard, salt, and black pepper.
Mix the tuna salad until the ingredients are thoroughly combined, breaking up any large tuna chunks and ensuring an even creamy texture.
Pat the cucumber boats dry, then evenly divide the tuna salad mixture among them, pressing gently for a neat fill. Serve immediately for optimal crunch.