Tuna Avocado Cucumber Boats

Featured in: Quick Weeknight Dinners

These refreshing cucumber boats combine crisp vegetables with creamy avocado and protein-rich tuna for a satisfying low-carb meal. The zesty lemon-Dijon dressing brings all the flavors together beautifully. Ready in just 10 minutes with no cooking required, making them ideal for busy weekdays, meal prep, or light summer lunches when you want something nutritious without spending hours in the kitchen.

Updated on Wed, 11 Feb 2026 09:42:21 GMT
Freshly prepared 10-Minute Tuna Avocado Cucumber Boats served chilled on a white plate with lemon slices. Pin
Freshly prepared 10-Minute Tuna Avocado Cucumber Boats served chilled on a white plate with lemon slices. | garlicgroove.com

Experience a fresh and satisfying low-carb lunch with these 10-Minute Tuna Avocado Cucumber Boats. This recipe transforms simple ingredients into a zesty, nutrient-dense meal that is perfect for weight loss and quick meal prep. By swapping heavy mayonnaise for creamy avocado, you get a heart-healthy filling that nestles perfectly inside crisp cucumber boats.

Freshly prepared 10-Minute Tuna Avocado Cucumber Boats served chilled on a white plate with lemon slices. Pin
Freshly prepared 10-Minute Tuna Avocado Cucumber Boats served chilled on a white plate with lemon slices. | garlicgroove.com

The combination of zesty lemon juice, Dijon mustard, and fresh herbs creates a bright flavor profile that complements the mildness of the cucumber. Whether you are looking for a light office lunch or a post-workout snack, these boats offer the perfect balance of crunch and creaminess.

Ingredients

  • Main: 2 large cucumbers, 1 ripe avocado (diced), 1 (5 oz / 140 g) can tuna in water (drained)
  • Vegetables & Herbs: 2 tablespoons red onion (finely chopped), 1 tablespoon fresh parsley or cilantro (chopped)
  • Dressing: 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

For the best flavor and texture, serve these boats chilled. You can also add diced tomatoes or bell peppers to the filling if you want an extra crunch in every bite.

Varianten und Anpassungen

You can easily swap the tuna for cooked shredded chicken or mashed chickpeas for a different protein source. If you prefer a spicier kick, try mixing in a few drops of your favorite hot sauce.

Serviervorschläge

These boats are best enjoyed immediately after preparation to maintain the crispness of the cucumber. Garnish with additional fresh herbs and a slice of lemon for a vibrant presentation.

Healthy 10-Minute Tuna Avocado Cucumber Boats filled with zesty tuna and creamy avocado salad. Pin
Healthy 10-Minute Tuna Avocado Cucumber Boats filled with zesty tuna and creamy avocado salad. | garlicgroove.com

Enjoy this effortless, light meal that proves healthy eating can be both quick and delicious. These 10-Minute Tuna Avocado Cucumber Boats are sure to become a staple in your lunch rotation.

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Recipe Questions

How long do cucumber boats stay fresh?

Best enjoyed immediately, but you can prep components separately up to 24 hours ahead. Store the cucumber halves and filling in separate airtight containers in the refrigerator, then assemble just before serving to maintain crisp texture.

Can I make this dairy-free?

This dish is naturally dairy-free. The creamy texture comes from ripe avocado, making it perfect for those avoiding dairy while still wanting a satisfying, rich mouthfeel.

What can I use instead of tuna?

Cooked shredded chicken breast, flaked salmon, or mashed chickpeas work wonderfully. For a vegetarian version, try chickpeas or white beans mashed with avocado for similar protein content and creaminess.

How do I prevent the cucumber from getting watery?

After scooping out seeds, lightly salt the cucumber interiors and let them sit cut-side down for 5-10 minutes. Pat dry with paper towels before filling. This removes excess moisture and keeps your boats crisp.

Are these suitable for meal prep?

Absolutely! Prepare the filling up to 2 days in advance and store separately. Keep cucumber halves whole in the refrigerator, slice and fill just before eating. The flavors actually develop better after sitting overnight.

How can I add more protein?

Increase protein by adding chopped hard-boiled eggs, mixing in Greek yogurt with the dressing, or topping with hemp seeds or chopped nuts. You could also use double the tuna or add shredded chicken.

Tuna Avocado Cucumber Boats

Fresh cucumber boats filled with creamy avocado and zesty tuna salad. Ready in just 10 minutes, perfect for quick low-carb lunches.

Prep duration
10 min
0
Complete duration
10 min


Complexity Easy

Heritage International

Output 2 Portions

Dietary requirements No dairy, No gluten, Low-Carb

Components

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 lemon juice
02 1 teaspoon olive oil
03 1/2 teaspoon Dijon mustard
04 Salt and freshly ground black pepper to taste

Directions

Step 01

Prepare cucumber boats: Slice cucumbers in half lengthwise. Use a spoon to gently scrape out the seeds, creating hollow boats.

Step 02

Combine filling ingredients: In a mixing bowl, combine diced avocado, drained tuna, chopped red onion, and fresh parsley or cilantro.

Step 03

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

Step 04

Dress the mixture: Pour dressing over tuna-avocado mixture and gently fold until well combined, taking care not to break down the avocado.

Step 05

Fill cucumber boats: Spoon the filling evenly into the prepared cucumber boats.

Step 06

Serve: Serve immediately, garnished with additional fresh herbs if desired.

Necessary tools

  • Sharp knife
  • Spoon
  • Mixing bowl
  • Small whisk or fork

Allergy details

Review each ingredient for potential allergens and speak with a healthcare provider if you're uncertain about anything.
  • Contains fish (tuna)
  • Contains mustard
  • Check tuna and mustard labels for potential cross-contamination with common allergens

Nutrition breakdown (per portion)

These values are provided as estimates only and shouldn't replace professional medical guidance.
  • Energy: 220
  • Fat: 12 g
  • Carbohydrates: 10 g
  • Protein: 18 g