
These light and refreshing tuna cucumber boats pack incredible flavor and nutrition into just 95 calories per serving, making them the perfect healthy solution for hot summer days when you want something satisfying without turning on the stove. The crisp English cucumber shells provide the ideal vessel for a creamy tuna salad lightened with Greek yogurt, creating a protein-rich meal that feels indulgent while being naturally low-carb and keto-friendly. With their beautiful presentation and clean, fresh flavors, these boats prove that healthy eating can be both delicious and visually appealing.
I discovered these tuna cucumber boats when I was looking for lighter lunch options that would keep me satisfied during the summer heat without feeling heavy or requiring any cooking. The combination of protein-rich tuna and hydrating cucumber creates this perfect balance that leaves you feeling energized rather than sluggish. What I love most is how they've become my go-to solution for so many different situations - quick work lunches, healthy snacks, or impressive appetizers when friends come over. The Greek yogurt keeps the filling creamy while adding extra protein and probiotics, making these boats both delicious and nutritious.
Essential Ingredients and Selection Tips
- English cucumbers: Choose large, firm cucumbers with bright green skin and no soft spots; they have thin skin and minimal seeds
- Tuna in water: Use high-quality canned tuna in water rather than oil to keep calories low while maintaining protein
- Plain Greek yogurt: Select thick, 2% or nonfat Greek yogurt for creaminess without excessive calories
- Light mayonnaise: Just enough to provide richness while keeping the calorie count reasonable
- Fresh red onion: Adds crunch and sharp flavor; dice very finely for even distribution
- Fresh dill: Provides aromatic freshness that elevates the flavor beyond basic tuna salad
Step-by-Step Instructions
- Prepare cucumbers for optimal boats:
- Wash English cucumbers thoroughly under cold running water and pat completely dry with a clean kitchen towel. Using a sharp knife, slice each cucumber in half lengthwise, then cut each half in half again lengthwise, creating four boat-shaped pieces from each cucumber. The cuts should be clean and even for the best presentation.
- Create proper cavities:
- Using a small spoon or melon baller, carefully scoop out the seeds and some of the inner flesh from each cucumber piece, creating a shallow cavity that can hold the tuna filling. Leave enough cucumber wall thickness (about 1/4 inch) to maintain structural integrity while providing adequate space for filling.
- Drain tuna thoroughly:
- Open the canned tuna and drain completely, pressing out as much liquid as possible using a fork or by wrapping in a clean kitchen towel and squeezing gently. Excess liquid will make the filling watery and cause it to fall out of the cucumber boats. Transfer the well-drained tuna to a medium mixing bowl.
- Create the lightened filling:
- To the drained tuna, add plain Greek yogurt, light mayonnaise, finely diced red onion, chopped fresh dill, garlic powder, salt, and black pepper. Mix thoroughly with a fork, breaking up any large pieces of tuna and ensuring all ingredients are evenly distributed throughout the mixture.
- Season and adjust consistency:
- Taste the tuna mixture and adjust seasoning as needed, adding more salt, pepper, or garlic powder to your preference. The mixture should be creamy and well-seasoned but not overly wet. If it seems too dry, add a small amount of additional Greek yogurt; if too wet, drain any excess liquid.
- Fill boats generously:
- Using a spoon, divide the tuna mixture evenly among the prepared cucumber boats, mounding it slightly and pressing gently to ensure it stays in place. Each boat should be well-filled but not overflowing, creating an attractive presentation that's easy to eat.
- Garnish and serve immediately:
- Sprinkle additional fresh dill or a light dusting of paprika over the filled boats for color and extra flavor. Serve immediately while the cucumbers are crisp and the filling is well-chilled, or refrigerate briefly until ready to serve.

The technique I'm most excited about in this recipe is using Greek yogurt to replace most of the mayonnaise, which dramatically reduces calories while actually improving the nutritional profile. When I first tried this substitution, I was worried it would taste too tangy or not creamy enough, but the combination of Greek yogurt with just a small amount of mayonnaise creates the perfect texture and flavor balance. The Greek yogurt adds protein, probiotics, and a subtle tang that actually enhances the other flavors rather than masking them. This simple swap turns regular tuna salad into something much healthier without sacrificing any of the satisfaction.
Cucumber Selection and Preparation Excellence
English cucumbers are superior for this application because of their size, thin skin, and minimal seed content. Their mild flavor doesn't compete with the tuna filling, while their firm texture provides the perfect structural foundation. Proper preparation - thorough washing, careful cutting, and strategic scooping - creates boats that hold their shape while providing adequate filling space.
Protein Optimization and Calorie Control
This recipe maximizes protein while minimizing calories through smart ingredient choices. Tuna in water provides lean protein without added fats, while Greek yogurt contributes additional protein along with probiotics. The careful balance of Greek yogurt and minimal mayonnaise creates creamy texture without excessive calories, making each boat incredibly satisfying despite being only 95 calories.
Flavor Enhancement and Seasoning Strategy
The seasoning approach creates complexity beyond basic tuna salad while keeping the ingredient list simple. Fresh dill provides aromatic brightness, red onion adds crunch and sharpness, and garlic powder contributes savory depth. The combination creates layers of flavor that make each bite interesting and satisfying.
Texture Balance and Assembly Technique
Achieving the perfect texture contrast requires understanding how each component contributes to the eating experience. The crisp cucumber provides refreshing crunch, while the creamy filling offers satisfying richness. Proper assembly ensures the filling stays in place while maintaining the structural integrity of the cucumber boats.
Storage and Freshness Maintenance
These boats are best enjoyed fresh but can be stored successfully when handled properly. The key is keeping components from becoming soggy while maintaining food safety. Understanding how Greek yogurt-based fillings behave over time helps optimize both flavor and texture when making ahead.
Nutritional Benefits and Health Advantages
Beyond the impressive calorie count, these boats provide substantial nutrition through high-quality protein, healthy fats, and hydrating vegetables. The combination supports weight management goals while providing sustained energy and satiety. Understanding the nutritional profile helps appreciate why these simple boats are so satisfying despite being so light.
These tuna cucumber boats have become my go-to solution for healthy eating that doesn't feel like a compromise because they prove that nutritious food can be both satisfying and delicious. There's something so appealing about the way the cool, crisp cucumber contrasts with the creamy, protein-rich filling, creating this perfect balance that leaves you feeling energized and satisfied. Every time I make them, whether for quick lunches, healthy snacks, or impressive appetizers, I'm reminded that some of the best recipes are the ones that make eating well feel effortless and enjoyable rather than restrictive.
Frequently Asked Questions
- → How long do tuna cucumber boats last in the fridge?
- They stay fresh for up to 2 days in the refrigerator, though the cucumbers may release some water over time.
- → Can I make these without mayonnaise?
- Yes, you can use extra Greek yogurt instead of mayo for a lighter version or try mashed avocado.
- → What type of cucumber works best?
- English cucumbers are ideal because they have fewer seeds and a milder taste, but regular cucumbers work too.
- → How many calories are in each cucumber boat?
- Each tuna cucumber boat has about 95 calories, making them perfect for healthy snacking or weight loss.
- → Can I prep these ahead of time?
- You can make the tuna salad ahead and store it separately, then fill the cucumber boats just before serving for best results.
- → What can I add to make them more filling?
- Try adding chopped hard-boiled eggs, diced celery, or a sprinkle of everything bagel seasoning for extra flavor and texture.