Low-Carb Creamy Tuna Cucumber Boats

When it gets too hot to cook, the last thing you want is to have to fire up your oven or stove. That's why I've been working on recipes perfect for hot summer days. No stove and no oven needed!

Inspired by the latest TikTok trends, these cucumber boats are stuffed with a simple creamy tuna salad made with tuna, mayo, mustard and onions. And if you're not a fan of cucumber, you use bell peppers or romano peppers instead. They are great for stuffing and work well with any creamy fillings.

If or you are vegetarian, this Creamy Egg Salad is what you can use instead of the tuna salad. You could even use cooked chicken or some Guacamole which would also make these vegan friendly.

These will be some leftover cucumber seeds in this recipe. If you're like me and don't like wasting ingredients, you could use the cucumber seeds in other recipes such as our Cucumber Cooler or add them to this Chilled Cucumber Soup.

How about the serving size? Will two cucumber boats be enough? It depends. While two cucumber boats will be enough for a light lunch or snack, four will be ideal for a more satisfying meal. Enjoy!

No-Cook Keto Lunch and Dinner Recipes

Looking fo more no-cook keto recipes? All of these are great options if you need to keep your kitchen cool.

• Creamy Egg & Avocado Salad Pepper Boats (uses hard-boild eggs)
• Bell Pepper Sandwich with Bacon, Ham & Cheese
• Mexican Bell Pepper Sandwich (dairy-free)
• Keto Ranch BLT Lettuce Wrap
• Italian Sub Keto Roll Ups
• Low-Carb Feta & Avocado Lettuce Cups (vegetarian)
• Keto Loaded Egg Salad (uses hard-boild eggs)

Looking for more recipes? We have over 100 low-carb salads most of which are cold or use cooked and cooled ingredients such as chicken, fish or eggs.

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Step-by-step

1. Prepare the ingredients for the filling. Drain the tuna, finely dice the red onion and chop the spring onions.

   

2. Place the drained tuna, red onion, mayonnaise, Dijon mustard (or yellow mustard) into a bowl and mix to combine. Season with salt and pepper to taste. Set aside.

3. Peel the cucumber and cut it in half widthwise and also lengthwise to get a total of 4 pieces. Use a small measuring spoon or a teaspoon to scoop the watery seeds out. Discard the seeds or use in another recipe (see tips in the recipe post above). Note: All weights listed in our KetoDiet App are always per edible amounts! A 140 g/4-oz can of tuna will yield about 100 g tuna. Same applies to cucumber. To get about 240 g/8.5 oz of peeled and deseeded cucumber, you'll need a large 370 g/13 oz cucumber.

   

4. Top the halves with the creamy tuna and fresh spring onions or chives). Eat immediately. the creamy cucumber salad can be stored in a sealed jar in the fridge for up to 3 days.

   

Recipe

Low-Carb Creamy Tuna Cucumber Boats

★★★★★4.7 (111 ratings)

These keto cucumber boats stuffed with creamy tuna salad are perfect for hot summer days when you don't want ...

Hands on

10m

Overall

10m

Servings

2

3.3 g

Net carbs

13.2 g

Protein

20.5 g

Fat

255

kcal

1 serving2 servings3 servings4 servings5 servings6 servings7 servings8 servings9 servings10 servings11 servings12 servings

US + metricMetricUS

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Ingredients makes 2 servings

• 1 can (4-oz) tuna in spring water, drained (100 g/ 3.5 oz)
• ¹/₂ small red onion, finely diced (30 g/ 1.1 oz)
• 3 tbsp mayonnaise (45 g/ 1.6 oz) - you can make your own mayo
• ¹/₂ tsp Dijon mustard or yellow mustard
• sea salt and pepper, to taste
• 1 large cucumber, peeled and seeds removed (240 g/ 8.5 oz)
• 1 medium spring onion, sliced (15 g/ 0.5 oz) or fresh chives

Instructions

1. Prepare the ingredients for the filling. Drain the tuna, finely dice the red onion and chop the spring onions.

2. Place the drained tuna, red onion, mayonnaise, Dijon mustard (or yellow mustard) into a bowl and mix to combine. Season with salt and pepper to taste. Set aside.

3. Peel the cucumber and cut it in half widthwise and also lengthwise to get a total of 4 pieces. Use a small measuring spoon or a teaspoon to scoop the watery seeds out. Discard the seeds or use in another recipe (see tips in the recipe post above). Note: All weights listed in our KetoDiet App are always per edible amounts! A 140 g/4-oz can of tuna will yield about 100 g tuna. Same applies to cucumber. To get about 240 g/8.5 oz of peeled and deseeded cucumber, you'll need a large 370 g/13 oz cucumber.

4. Top the halves with the creamy tuna and fresh spring onions or chives). Eat immediately. the creamy cucumber salad can be stored in a sealed jar in the fridge for up to 3 days.

Nutrition per serving, 2 cucumber boats

Carbs 5%Protein 21%Fat 74% of calories

Net carbs

3.3 g

Total carbs

4.7 g

Fiber

1.4 g

Sugars

2.7 g

Protein

13.2 g

Fat

20.5 g

Saturated fat

3.1 g

Calories

255 kcal

Sodium

404 mg · 17.5% RDA

Magnesium

34 mg · 8.61% RDA

Potassium

335 mg · 16.7% EMR

Nutrition by ingredient

Per 2 cucumber boats	Net carbs	Protein	Fat	kcal
Fish, tuna, white, canned in water, without salt, drained solids	0 g	11.8 g	1.5 g	64
Onion, red, fresh	1 g	0.2 g	0 g	6
Mayonnaise	0.1 g	0.2 g	18.7 g	167
Dijon mustard	0 g	0.1 g	0.1 g	2
Salt, sea salt	0 g	0 g	0 g	0
Pepper, black, spices	0.1 g	0 g	0 g	0
Cucumber, fresh	1.8 g	0.7 g	0.2 g	14
Spring onion, scallion, green onion, fresh	0.4 g	0.1 g	0 g	2
Total	3.3 g	13.2 g	20.5 g	255

Serving size 2 cucumber boats

• Gluten free
• Dairy free
• Nut free
• Nightshade free
• Pork free
• Avocado free
• Coconut free
• Shellfish free
• Beef free
• Pescatarian