Tuna Avocado Cucumber Boats

Featured in: Midday Momentum

Fresh cucumber halves stuffed with a creamy tuna and avocado mixture, these crisp boats offer a satisfying light meal in just 10 minutes. The zesty lemon-Dijon dressing complements the rich avocado while keeping carbohydrates low. Perfect for quick lunches, weight loss goals, and weekly meal prep, these boats stay fresh for days and customize easily with your favorite vegetables or proteins.

Updated on Wed, 11 Feb 2026 09:32:59 GMT
Freshly made 10-Minute Tuna Avocado Cucumber Boats displayed on a white plate, featuring crisp cucumber halves stuffed with creamy avocado and flaky tuna salad. Save to Pinterest
Freshly made 10-Minute Tuna Avocado Cucumber Boats displayed on a white plate, featuring crisp cucumber halves stuffed with creamy avocado and flaky tuna salad. | krispyrecipes.com

When you need a nutritious lunch that doesn't skimp on flavor or crunch, these 10-Minute Tuna Avocado Cucumber Boats are the perfect solution. This low-carb meal swaps out traditional bread for crisp, refreshing cucumber halves, creating a satisfying boat filled with a zesty, protein-rich tuna and avocado salad. It is an ideal choice for busy weekdays, healthy meal prep, or a light summer lunch.

Freshly made 10-Minute Tuna Avocado Cucumber Boats displayed on a white plate, featuring crisp cucumber halves stuffed with creamy avocado and flaky tuna salad. Save to Pinterest
Freshly made 10-Minute Tuna Avocado Cucumber Boats displayed on a white plate, featuring crisp cucumber halves stuffed with creamy avocado and flaky tuna salad. | krispyrecipes.com

The beauty of this dish lies in its simplicity. By combining pantry staples like canned tuna with fresh avocado and crisp cucumbers, you create a gourmet-feeling meal that provides 18g of protein per serving. The zesty dressing, made with lemon juice and a touch of Dijon mustard, brings all the components together without the need for heavy mayonnaise.

Ingredients

  • 2 large cucumbers
  • 1 ripe avocado, diced
  • 1 (5 oz / 140 g) can tuna in water, drained
  • 2 tablespoons red onion, finely chopped
  • 1 tablespoon fresh parsley or cilantro, chopped
  • 1 tablespoon lemon juice
  • 1 teaspoon olive oil
  • ½ teaspoon Dijon mustard
  • Salt and freshly ground black pepper, to taste
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Instructions

Step 1
Slice the cucumbers in half lengthwise. Use a spoon to gently scrape out the seeds, creating boats.
Step 2
In a bowl, combine the diced avocado, drained tuna, red onion, and parsley or cilantro.
Step 3
In a small bowl, whisk together the lemon juice, olive oil, Dijon mustard, salt, and pepper.
Step 4
Pour the dressing over the tuna-avocado mixture and mix gently until well combined.
Step 5
Spoon the filling evenly into the cucumber boats.
Step 6
Serve immediately, garnished with extra herbs if desired.

Zusatztipps für die Zubereitung

To ensure the best texture, choose cucumbers that are firm and straight. When scraping out the seeds, leave a sturdy border so the boats hold the filling properly. Always drain the canned tuna thoroughly to prevent the salad from becoming too moist, and double-check your labels for fish and mustard allergens if you have dietary sensitivities.

Varianten und Anpassungen

This recipe is very flexible. You can swap the canned tuna for cooked shredded chicken or chickpeas if you prefer a different protein source. For added texture, mix in some finely diced bell peppers or tomatoes. If you enjoy a bit of heat, try adding a few drops of your favorite hot sauce into the dressing mixture.

Serviervorschläge

These boats are best served chilled, which keeps the cucumber crisp and the tuna salad refreshing. Garnish with a sprig of fresh parsley or cilantro just before serving to add a pop of color. These are best enjoyed immediately after assembly to maintain the crispness of the cucumber "hull."

10-Minute Tuna Avocado Cucumber Boats Save to Pinterest
10-Minute Tuna Avocado Cucumber Boats | krispyrecipes.com

With minimal effort and high-quality ingredients, these Tuna Avocado Cucumber Boats prove that eating healthy can be fast, delicious, and aesthetically pleasing. Whether you are following a low-carb diet or just want a fresh lunch option, this recipe is sure to become a staple in your weekly rotation.

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Common Recipe Questions

How long do cucumber boats stay fresh?

These boats stay fresh for 2-3 days when stored in an airtight container in the refrigerator. For best texture, add the filling just before serving rather than storing pre-assembled boats.

Can I make these ahead for meal prep?

Yes. Prepare the tuna-avocado filling and store separately from hollowed cucumbers. Assemble just before eating to maintain the crisp texture of the cucumber boats.

What proteins work as tuna substitutes?

Cooked shredded chicken, chickpeas, or flaked salmon make excellent alternatives. Adjust seasonings slightly to complement the protein you choose.

How do I prevent the cucumber from getting soggy?

Scoop seeds thoroughly and pat boats dry before filling. If making ahead, store filling separately and assemble shortly before serving to maintain crisp texture.

What vegetables add extra crunch?

Diced bell peppers, radishes, carrots, or celery can be mixed into the filling. Thin cucumber ribbons also make an attractive garnish while adding freshness.

Tuna Avocado Cucumber Boats

Crisp cucumber boats filled with zesty tuna and avocado salad—a fresh, low-carb lunch ready in 10 minutes.

Prep Duration
10 minutes
0
Overall Time
10 minutes
Created by Mia Harper

Recipe Type Midday Momentum

Skill Level Easy

Cuisine Type International

Total Portions 2 Serving Size

Dietary Considerations No Dairy, No Gluten, Low-Carbohydrate

What You’ll Need

Main

01 2 large cucumbers
02 1 ripe avocado, diced
03 1 can (5 oz) tuna in water, drained

Vegetables & Herbs

01 2 tablespoons red onion, finely chopped
02 1 tablespoon fresh parsley or cilantro, chopped

Dressing

01 1 tablespoon fresh lemon juice
02 1 teaspoon extra virgin olive oil
03 ½ teaspoon Dijon mustard
04 Salt and freshly ground black pepper to taste

How to Make It

Step 01

Prepare cucumber boats: Slice cucumbers lengthwise into halves. Using a spoon, gently scrape out the seeds to create hollow boats for filling.

Step 02

Combine tuna mixture: In a mixing bowl, combine diced avocado, drained tuna, chopped red onion, and fresh herbs.

Step 03

Prepare vinaigrette: In a separate small bowl, whisk together lemon juice, olive oil, Dijon mustard, salt, and black pepper until emulsified.

Step 04

Dress the filling: Pour dressing over the tuna and avocado mixture. Gently fold until all components are evenly coated.

Step 05

Fill cucumber boats: Distribute the tuna salad evenly among the cucumber halves, filling each boat generously.

Step 06

Finish and serve: Serve immediately at room temperature or chilled. Garnish with additional fresh herbs if desired.

Tools You’ll Need

  • Sharp chef's knife
  • Spoon for seed removal
  • Mixing bowl
  • Small whisk or fork

Possible Allergens

Double-check each ingredient for allergens and consult an expert if you're unsure.
  • Contains fish (tuna)
  • Contains mustard
  • Verify tuna and mustard labels for potential cross-contamination risks

Nutritional Information (per serving)

This data is for informational purposes and shouldn't replace professional advice.
  • Calorie Count: 220
  • Total Fat: 12 grams
  • Total Carbohydrates: 10 grams
  • Protein Content: 18 grams