High protein tuna cucumber boats are a crisp, creamy, no-cook lunch you can make in just 10 minutes. Each cucumber half is filled with a tangy tuna salad made with Greek yogurt instead of mayonnaise, creating a refreshing mix of creamy and crunchy textures.
This recipe is useful on busy days when you want something quick without turning on the stove. The filling uses simple ingredients, and the boats are easy to assemble just before serving. The key is draining the tuna well and drying the scooped cucumbers so the filling stays thick rather than watery.
These high protein tuna cucumber boats are an easy way to enjoy a crisp, filling lunch without cooking.
Why You’ll Love This Recipe
- Ready in 10 minutes with no cooking.
- Made without mayonnaise.
- About 32 grams of protein per serving.
- Crisp, creamy, and refreshing.
- Easy to customize with herbs or spices.
- The filling can be prepared ahead.
Serve the boats as a light lunch, snack, or appetizer. For a fuller meal, add whole-grain crackers, fruit, soup, or a simple side salad.
Ingredients and Substitutions
English Cucumbers
English cucumbers work best because they are long, firm, and have thin skin. Regular cucumbers also work, but peel thick or bitter skin before using them.
Canned Light Tuna
Use tuna packed in water and drain it very well. Press it gently against the side of a fine-mesh strainer to remove as much liquid as possible. This helps prevent a watery filling.
Plain Greek Yogurt
Greek yogurt creates a creamy base without mayonnaise. Nonfat Greek yogurt gives the leanest result, while 2% yogurt makes the filling slightly richer. Avoid regular yogurt because it is thinner.
Celery and Red Onion
Finely diced celery adds crunch, while red onion adds a sharper flavor. Chop both finely so the filling fits neatly inside the cucumber boats.
Dijon, Lemon, and Herbs
Dijon mustard adds depth, lemon juice brightens the filling, and fresh dill pairs well with tuna and cucumber. Parsley or green onion can replace the dill.
How to Make High Protein Tuna Cucumber Boats in 10 Minutes
1. Drain the Tuna
Transfer the tuna to a fine-mesh strainer. Press gently to remove excess water, then place it in a medium mixing bowl.
2. Prepare the Cucumbers
Wash and dry the cucumbers, then slice each one in half lengthwise. Use a small spoon to remove only the soft seed-filled center, leaving a thick border around the sides and bottom.
Pat the hollowed centers dry with a clean paper towel. Do not salt the cucumber halves because salt pulls out moisture.
3. Mix the Filling
Add Greek yogurt, celery, red onion, Dijon mustard, lemon juice, dill, garlic powder, salt, and black pepper to the tuna. Stir until evenly combined.
The filling should be creamy but firm enough to hold its shape on a spoon. If it looks loose, add a little more drained tuna or refrigerate it for 10 minutes.
4. Fill and Serve
Divide the tuna salad among the four cucumber halves. Garnish with extra dill, paprika, black pepper, or red pepper flakes, then serve immediately.
Serve the high protein tuna cucumber boats immediately while the cucumbers are fresh and crisp.
How to Prevent Watery Tuna Filling
Follow these simple steps for a firm, creamy texture:
- Drain the tuna until no visible water remains.
- Use thick Greek yogurt instead of regular yogurt.
- Remove the watery cucumber seeds.
- Pat the hollowed cucumbers dry.
- Do not salt the cucumber halves.
- Assemble shortly before serving.
For meal prep, store the tuna filling and cucumbers separately and fill the boats when ready to eat.
Easy Variations
Spicy
Add hot sauce, cayenne pepper, or finely diced jalapeño.
Mediterranean
Mix in chopped parsley, diced olives, and dried oregano.
Extra Crunchy
Add finely diced bell pepper or well-drained chopped pickles.
Avocado
Replace half of the Greek yogurt with mashed avocado and serve immediately.
Appetizer Bites
Cut the cucumbers into thick rounds, scoop a shallow center from each piece, and top with a spoonful of tuna salad.
Serving Ideas
Two filled cucumber halves make a light lunch. Serve them with whole-grain crackers, toasted pita, soup, fruit, a quinoa salad, or a simple green salad.
For another quick lunch with a creamy Greek yogurt base, try our High Protein Greek Yogurt Chicken Salad.
For another quick high-protein lunch, try our High Protein Greek Yogurt Chicken Salad.
Make-Ahead and Storage
For the best texture, assemble the high protein tuna cucumber boats shortly before serving.
Prepare the tuna filling ahead and keep it in an airtight container in the refrigerator. Store the cucumber halves separately and assemble the boats just before eating.
FoodSafety.gov lists tuna salad among refrigerated salads that should be used within 3 to 4 days when stored at 40°F or below.
Assembled boats are best eaten the same day because cucumbers release moisture over time.
According to FoodSafety.gov, refrigerated tuna salad should be used within 3 to 4 days when stored at 40°F or below.
Frequently Asked Questions
Can I Make Cucumber Boats Ahead?
Yes, but keep the filling and cucumber halves separate. Assemble them shortly before serving for the best texture.
What Tuna Works Best?
Canned light tuna packed in water gives the filling a clean flavor and is easy to drain. Oil-packed tuna also works but produces a richer result.
People who are pregnant or breastfeeding, and parents preparing tuna for young children, can review the FDA and EPA fish-advice chart for current guidance on tuna choices and serving frequency. Canned light tuna is listed as a “Best Choice,” while canned albacore or white tuna is listed as a “Good Choice” in that guidance.
Can I Use Regular Yogurt?
Greek yogurt is recommended because it is thicker. If regular yogurt is your only option, strain it before adding it to the tuna.
Can I Use Regular Cucumbers?
Yes. Choose firm cucumbers and peel them if their skin is thick. You may need more than two, depending on their size.
Are These Good for Meal Prep?
The filling is meal-prep friendly, but the assembled boats are best fresh. Keep the components separate until serving.
High Protein Tuna Cucumber Boats Recipe
Ingredients
- 2 large English cucumbers
- 2 cans light tuna packed in water, 5 ounces each, drained very well
- 1/3 cup plain nonfat Greek yogurt
- 1 celery stalk, finely diced
- 2 tablespoons finely diced red onion
- 1 tablespoon Dijon mustard
- 1 tablespoon fresh lemon juice
- 1 tablespoon chopped fresh dill or parsley
- 1/4 teaspoon garlic powder
- 1/4 teaspoon salt, or to taste
- 1/8 teaspoon black pepper
- Optional: paprika, red pepper flakes, or extra dill
Instructions
- Drain the tuna thoroughly and place it in a medium bowl.
- Slice the cucumbers in half lengthwise.
- Scoop out the soft seed-filled centers, leaving thick cucumber walls.
- Pat the hollowed cucumbers dry.
- Add Greek yogurt, celery, onion, mustard, lemon juice, dill, garlic powder, salt, and pepper to the tuna.
- Stir until creamy and evenly combined.
- Divide the filling among the four cucumber halves.
- Garnish and serve immediately.
Recipe Notes
- Drain the tuna carefully to prevent a watery filling.
- Do not salt the cucumber halves.
- Store the filling and cucumbers separately when preparing ahead.
- Use 2% Greek yogurt for a richer texture.
- Nutrition values are estimates and vary by brand.
These high protein tuna cucumber boats combine creamy Greek yogurt tuna salad with fresh, crunchy cucumber. They are perfect for a quick lunch, light dinner, or easy high-protein snack.
Estimated Nutrition
Per serving of two cucumber boats:
- Calories: 195
- Protein: 32 grams
- Carbohydrates: 13 grams
- Fat: 2 grams
- Fiber: 2 grams
Prep time: 10 minutes
Cook time: 0 minutes
Total time: 10 minutes
Servings: 2
Yield: 4 cucumber boats
Course: Lunch
Cuisine: American