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Low-Calorie Cucumber Tuna Boats
Some nights you just don’t want to turn on the stove, and that’s exactly when this recipe earns its keep. Crisp cucumber halves loaded up with a creamy, tangy tuna salad feel like a real meal, not a sad diet plate. It’s the kind of thing I make when I want something satisfying but don’t want to feel weighed down afterward.
Why You’ll Love This Recipe
This one comes together in about ten minutes, no exaggeration. There’s no cooking involved, so it’s perfect for hot days or those evenings when the last thing you want is a warm kitchen.
It’s also naturally low-carb and packed with protein, so it keeps you full without the heavy feeling you get from bread-based tuna sandwiches. And honestly, the crunch of the cucumber against the creamy tuna is just a good combination. It feels fresh every single time.
Plus, this is one of those recipes that flexes to whatever you have on hand. Out of Greek yogurt? Use mayo. No dill? Skip it or swap in parsley. It’s forgiving, which makes it a great one to keep in your back pocket.
Ingredients You’ll Need
The star here is obviously the cucumber. English cucumbers work best because they’ve got fewer seeds and a thinner skin, but regular cucumbers are totally fine too, just scoop out the seedy middle a bit more.
For the tuna, canned tuna packed in water keeps things lighter, but if you’ve got tuna packed in olive oil, that works beautifully too and adds a little extra richness. Either way, drain it well so your filling doesn’t turn watery.
I like using plain Greek yogurt instead of straight mayo because it adds a nice tang and cuts down on calories without sacrificing that creamy texture. That said, if you’re a mayo person through and through, go for it, or split the difference and use half of each.
A little diced celery adds crunch, red onion brings some bite, and a squeeze of lemon juice wakes everything up. Salt, pepper, and a bit of fresh dill round it out, though dried dill works in a pinch. If you like heat, a small dash of hot sauce or a pinch of cayenne is a nice touch too.
Tips for the Best Results
Make sure your tuna is drained really well, pressing it gently with a fork or spoon to squeeze out excess liquid. This keeps the filling thick and scoopable instead of runny.
Don’t skip the acid. That squeeze of lemon juice really brightens the whole dish and keeps it from tasting flat or heavy.
If you’re meal prepping, keep the tuna salad separate from the cucumbers until you’re ready to eat. This keeps everything crisp instead of soggy.
Storage and Reheating
This isn’t really a reheat situation since it’s meant to be enjoyed cold, but leftovers still need proper storage. Keep the tuna salad in an airtight container in the fridge for up to three days.
If you do end up with assembled boats that sat in the fridge for a bit, just drain any excess liquid from the cucumber before serving again.
Frequently Asked Questions
Can I make this ahead of time for meal prep?
Yes, just store the tuna salad separately from the cucumbers and assemble right before eating for the best texture.
What can I use instead of Greek yogurt?
Regular mayo, light mayo, or even mashed avocado all work well as substitutes.
Are cucumber boats good for low-carb or keto diets?
Absolutely, this recipe is naturally low in carbs and works great for keto, low-carb, or just lighter eating in general.
Can I use fresh tuna instead of canned?
Yes, cooked and flaked fresh tuna works well too, just season it the same way as you would the canned version.
product: OXO Good Grips Melon Baller and Scoop, ideal for quickly hollowing out cucumber halves into neat boats.
Low-Calorie Cucumber Tuna Boats
Crisp cucumber halves filled with a creamy, tangy tuna salad for a fast, low-carb, no-cook meal.
Ingredients
- 2 large English cucumbers
- 2 cans tuna in water (5 oz each), drained
- 1/3 cup plain Greek yogurt
- 2 tablespoons diced celery
- 2 tablespoons diced red onion
- 1 tablespoon lemon juice
- 1 tablespoon fresh dill, chopped
- 1/4 teaspoon salt
- 1/4 teaspoon black pepper
- 1 pinch cayenne pepper (optional)
Instructions
- Step 1. Slice cucumbers in half lengthwise and scoop out the seeds to create boats.
- Step 2. Salt the cucumber halves lightly and let sit cut-side down on paper towels for 5 minutes.
- Step 3. In a bowl, combine drained tuna, Greek yogurt, celery, red onion, lemon juice, dill, salt, and pepper.
- Step 4. Mix well until the filling is creamy and evenly combined.
- Step 5. Pat cucumber boats dry and spoon the tuna filling evenly into each half.
- Step 6. Sprinkle with extra dill or cayenne if desired and serve immediately.
