Hollow out a tomato, fill it with tuna salad, and you've got a high protein lunch that skips the bread entirely. Simple, low-carb, no cooking needed.
Slice the tops off the tomatoes and carefully hollow out the centers with a spoon, leaving sturdy tomato shells for stuffing.
Place the hollowed tomato shells upside down on a paper towel to drain excess moisture while preparing the filling.
In a large mixing bowl, combine the drained tuna, diced celery, red onion, and chopped hard-boiled eggs for the salad base.
Add mayonnaise, Dijon mustard, lemon juice, salt, black pepper, and fresh parsley to the bowl, then thoroughly mix until creamy yet chunky.
Spoon the tuna salad mixture evenly into each tomato shell, lightly pressing down to fill, and serve immediately or chill for 10–20 minutes for a firmer texture.