Tuna Avocado Cucumber Boats

Featured in: Warm Family Dinners

These refreshing cucumber boats come together in just 10 minutes with no cooking required. Simply hollow out fresh cucumbers and fill them with a creamy, zesty mixture of canned tuna, ripe avocado, red onion, and herbs. The light lemon-Dijon dressing ties everything together beautifully.

Perfect for busy weekdays, this low-carb dish delivers 18 grams of protein per serving while keeping carbs at just 10 grams. The crisp cucumber base contrasts wonderfully with the creamy avocado filling, creating satisfying texture in every bite.

Make these ahead for meal prep—they stay fresh for days. Customize with your favorite herbs or add extra vegetables like diced tomatoes or bell peppers for more crunch. Serve chilled for the most refreshing experience.

Updated on Wed, 11 Feb 2026 21:52:37 GMT
Freshly prepared 10-Minute Tuna Avocado Cucumber Boats served chilled on a platter with extra herbs. Save
Freshly prepared 10-Minute Tuna Avocado Cucumber Boats served chilled on a platter with extra herbs. | amberladle.com

There's something wonderfully satisfying about a meal that's as simple to prepare as it is delightful to eat. These Tuna Avocado Cucumber Boats perfectly exemplify that balance. In just 10 minutes, you can create a refreshing, nutritious dish that's packed with protein and healthy fats, yet light enough to leave you feeling energized rather than sluggish after lunch.

Freshly prepared 10-Minute Tuna Avocado Cucumber Boats served chilled on a platter with extra herbs. Save
Freshly prepared 10-Minute Tuna Avocado Cucumber Boats served chilled on a platter with extra herbs. | amberladle.com

The contrast between the cool, crisp cucumber and the creamy avocado-tuna filling creates a textural symphony that makes these boats incredibly satisfying. The zesty dressing with lemon and Dijon brightens the flavor profile, making each bite both refreshing and comforting. Best of all, this dish requires zero cooking, making it perfect for hot summer days when the last thing you want is to turn on the stove.

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

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

Zusatztipps für die Zubereitung

For the best texture, make sure to drain the canned tuna thoroughly. Excess liquid can make your filling watery. When scooping out the cucumber seeds, don't dig too deeply – you want a sturdy boat that can hold your filling without breaking. Choose avocados that yield slightly to gentle pressure for the perfect creamy consistency.

Varianten und Anpassungen

This versatile recipe welcomes many variations. Swap the tuna for cooked shredded chicken or chickpeas for a vegetarian option. For extra crunch and color, add diced bell peppers or cherry tomatoes to the filling. If you enjoy heat, mix in a few drops of hot sauce or some diced jalapeño. For a Mediterranean twist, add some chopped olives and use fresh dill instead of parsley.

Serviervorschläge

These cucumber boats make an elegant appetizer for gatherings when arranged on a platter with lemon wedges and extra herbs for garnish. For a more substantial meal, serve alongside a light soup or a simple green salad. They're best enjoyed chilled, making them perfect for meal prep – just store the cucumber boats and filling separately until ready to serve.

Healthy 10-Minute Tuna Avocado Cucumber Boats with a creamy filling and crisp, green cucumber halves. Save
Healthy 10-Minute Tuna Avocado Cucumber Boats with a creamy filling and crisp, green cucumber halves. | amberladle.com
Healthy 10-Minute Tuna Avocado Cucumber Boats with a creamy filling and crisp, green cucumber halves. Save
Healthy 10-Minute Tuna Avocado Cucumber Boats with a creamy filling and crisp, green cucumber halves. | amberladle.com
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Serve homemade meals comfortably with sturdy utensils and steak knives for everyday dining and special dinners.
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These Tuna Avocado Cucumber Boats represent the perfect balance of nutrition, flavor, and convenience. Whether you're following a specific eating plan or simply looking for a light yet satisfying meal option, this recipe delivers on all fronts. With just a handful of fresh ingredients and a few minutes of your time, you can create a dish that looks as impressive as it tastes. It's proof that healthy eating doesn't have to be complicated or time-consuming to be thoroughly enjoyable.

Recipe FAQs

Can I make these ahead for meal prep?

Yes, these boats meal prep beautifully. Prepare the filling and store it separately from the hollowed cucumbers. Assemble just before serving to keep the cucumbers crisp. They'll stay fresh in the refrigerator for 2-3 days.

What can I substitute for canned tuna?

Try cooked shredded chicken breast, chickpeas for a vegetarian version, or flaked cooked salmon. Crab meat also works wonderfully and adds a delicate sweetness that complements the avocado.

How do I prevent the avocado from browning?

The lemon juice in the dressing helps slow oxidation. Toss the diced avocado in a little extra lemon juice before combining with other ingredients. If storing the filling separately, press plastic wrap directly onto the surface to minimize air exposure.

Are these cucumber boats keto-friendly?

Absolutely. With only 10 grams of carbohydrates per serving and healthy fats from avocado and olive oil, these fit perfectly into a ketogenic diet. The protein from tuna makes them satisfying without heavy carbs.

Can I add other vegetables to the filling?

Diced tomatoes, bell peppers, or finely diced celery add wonderful crunch and flavor. Finely chopped jalapeños bring heat, while corn kernels or black beans introduce sweetness and texture.

What's the best way to hollow out the cucumbers?

Cut cucumbers in half lengthwise, then use a regular spoon to gently scrape out the seeds. Leave a thin layer of flesh to create sturdy boats that hold the filling without breaking. A melon baller also works perfectly for this task.

Tuna Avocado Cucumber Boats

Crisp cucumbers filled with zesty tuna avocado salad—a fresh low-carb lunch ready in 10 minutes.

Prep time
10 min
0
Overall time
10 min
Created by Rachel Hayes


Skill required Easy

Cuisine International

Makes 2 Serving size

Diet preferences No dairy, No gluten, Low Carb

What you need

Main

01 2 large cucumbers
02 1 ripe avocado, diced
03 1 (5 oz) can 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 1/2 teaspoon Dijon mustard
04 Salt and freshly ground black pepper to taste

How to make it

Step 01

Prepare cucumber boats: Halve cucumbers lengthwise and gently scrape out seeds with a spoon to create boats

Step 02

Combine filling ingredients: Mix diced avocado, drained tuna, chopped red onion, and fresh herbs in a bowl

Step 03

Prepare dressing: Whisk together lemon juice, olive oil, Dijon mustard, salt, and pepper in a small bowl

Step 04

Dress the mixture: Pour dressing over tuna-avocado mixture and gently combine until evenly coated

Step 05

Fill boats: Spoon filling evenly into each cucumber boat

Step 06

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

Equipment needed

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

Allergy info

Always review ingredients for allergens. Talk to your healthcare provider if you're unsure.
  • Contains fish (tuna)
  • Contains mustard
  • Check tuna and mustard labels for potential cross-contamination

Nutrition details (each serving)

Nutritional details are for reference and aren't a substitute for healthcare guidance.
  • Calorie Count: 220
  • Fat content: 12 g
  • Carbohydrate: 10 g
  • Protein amount: 18 g