High-Protein Tuna Salad Radicchio Boats
This High-Protein Tuna Salad Radicchio Boats recipe offers a refreshing and satisfying low-carb lunch, swapping traditional bread for crisp, slightly bitter radicchio leaves. It's packed with protein from tuna and Greek yogurt, making it an ideal healthy meal that comes together in minutes.
For 2 servings
Carefully remove 6-8 sturdy, intact outer leaves from the head of radicchio. Wash them thoroughly under cold water and gently pat them dry with a paper towel. Arrange them on a serving platter.
Drain the canned tuna very well. You can press it in a fine-mesh sieve to remove excess water, which prevents a watery tuna salad. Transfer the drained tuna to a medium mixing bowl.
Add the plain Greek yogurt, finely diced celery, minced red onion, fresh lemon juice, and Dijon mustard to the bowl with the tuna. Mix gently with a fork until all ingredients are well combined.
Stir in the chopped fresh dill and parsley. Season the tuna salad with kosher salt and black pepper. Taste and adjust seasonings as needed, adding more lemon juice for tang or salt for flavor.
Spoon a generous amount of the prepared tuna salad into each radicchio leaf, forming a 'boat'.
Serve immediately as a light lunch, snack, or appetizer. For best texture, consume within an hour of assembly, though the tuna salad can be made ahead and stored separately.
What to keep in mind.
4 tips from the recipe — small details that make a real difference to the final dish.
- 1To ensure crisp radicchio, store it in the refrigerator wrapped in a damp paper towel inside a plastic bag. For serving, immerse the leaves in ice water for 10 minutes, then pat very dry.
- 2For an extra creamy texture, use full-fat Greek yogurt. If you prefer a lighter option, low-fat or non-fat Greek yogurt works just as well without compromising flavor significantly.
- 3Don't skip draining the tuna thoroughly; excess water can make your tuna salad soggy. Pressing it firmly in a sieve or between paper towels is key.
- 4Prepare the tuna salad up to 2 days in advance and store it in an airtight container in the refrigerator. Assemble the boats just before serving to maintain the radicchio's crispness.
Adapt it for your goals.
Mediterranean Twist
Add 1/4 cup chopped Kalamata olives, 2 tablespoons crumbled feta cheese, and a pinch of dried oregano to the tuna salad for a Mediterranean-inspired flavor profile.
Spicy KickSpicy Kick
Incorporate 1-2 tablespoons of finely diced jalapeño or a dash of your favorite hot sauce into the tuna mixture for those who enjoy a bit of heat.
Crunchy AdditionsCrunchy Additions
For extra texture, mix in 2 tablespoons of chopped toasted almonds, walnuts, or sunflower seeds into the tuna salad before filling the radicchio boats.
Why this is on our healthy list.
High in Protein
Tuna and Greek yogurt are excellent sources of lean protein, essential for muscle repair, growth, and prolonged satiety, helping to manage hunger.
Rich in Omega-3 Fatty Acids
Tuna provides beneficial Omega-3 fatty acids (EPA and DHA), which are crucial for heart health, brain function, and reducing inflammation.
Low in Carbohydrates
By using radicchio instead of bread, this recipe significantly reduces carbohydrate content, making it suitable for low-carb, keto, and gluten-free diets.
Frequently asked questions
Yes, you can substitute mayonnaise for Greek yogurt if preferred, though it will change the nutritional profile, making it higher in fat and calories and lower in protein. Greek yogurt offers a tangier, lighter alternative.


