High Protein Tuna Avocado Salad
If you’re after a lunch that genuinely keeps you going without the afternoon slump, this high protein tuna avocado salad is my absolute go-to. I stumbled upon this combination by accident, and it’s been a hit ever since, proving that the best recipes often come from raiding the fridge when you’re hungry and short on time.
Recipe Overview
- Prep Time: 10 minutes
- Cook Time: 0 minutes
- Total Time: 10 minutes
- Servings: 2 generous main servings or 4 as a side
- Difficulty: Easy
Why You’ll Love This High Protein Tuna Avocado Salad
- Ready in minutes: There’s no cooking required, just a bit of chopping and mixing, making it ideal for busy weekdays.
- Naturally high in protein: Tuna provides a lean, substantial protein boost, while avocado adds healthy fats and a creamy texture that keeps you full for hours.
- No fuss ingredients: Everything can be found at your local supermarket, and most items are probably in your pantry or fridge already.
- Bright and fresh flavours: The combination of creamy avocado, flaky tuna, and a zesty lemon dressing is light yet deeply satisfying.
- Easily customisable: You can add crunchy vegetables, swap the protein, or dial up the spice depending on what you fancy that day.
Ingredients You’ll Need
- 2 x 160g cans of tuna in spring water, drained (about 320g total)
- 2 large, ripe avocados (about 400g total)
- 1 small red onion (approximately 80g), finely diced
- 1 large celery stick (about 60g), finely chopped
- 1 small red bell pepper (about 100g), deseeded and diced
- 3 tablespoons fresh lemon juice (from 1 large lemon)
- 2 tablespoons extra virgin olive oil
- 1 teaspoon Dijon mustard
- 1 tablespoon fresh chives, finely snipped
- Salt and freshly ground black pepper, to taste
- A handful of crisp lettuce leaves, to serve
Tip: Make sure your avocados are just ripe — they should yield slightly to gentle pressure but not feel mushy. Overripe avocados will turn the salad into a paste rather than leaving lovely chunky pieces.
How to Make High Protein Tuna Avocado Salad
- Prepare the tuna: Drain the canned tuna thoroughly, pressing it gently with a fork against the side of the colander to remove any excess liquid. You want it flaky and dry, not wet. You’ll notice the fish separates easily into tender, pale pink flakes.
- Chop the vegetables: Dice the red onion, celery, and red bell pepper into small, even pieces. The onion should be fine enough that it blends into the salad without overwhelming each bite, releasing a sharp, fresh aroma as you cut.
- Prepare the avocado: Halve the avocados, remove the stones, and scoop the flesh into a large salad bowl. Using a fork, roughly mash about half of the avocado until it’s creamy and pale green, then cut the remaining avocado into 1cm cubes. This gives you a lovely mix of smooth and chunky textures.
- Make the dressing: In a small jar, combine the lemon juice, extra virgin olive oil, and Dijon mustard. Screw the lid on tightly and shake vigorously until the dressing looks thick and slightly emulsified, with a pale, creamy colour. Give it a sniff — it should smell bright and tangy.
- Combine everything: Add the flaked tuna, chopped vegetables, and snipped chives to the bowl with the avocado. Pour the dressing over the top. Using two large forks or salad servers, gently fold everything together. You want the dressing to coat every ingredient evenly without breaking the tuna flakes into a mush. The finished salad should look colourful, with specks of red pepper, green chives, and creamy avocado throughout.
- Season and serve: Taste the salad — it should be bright and fresh. Season with salt and plenty of freshly ground black pepper. The pepper adds a gentle warmth that complements the tuna beautifully. Serve immediately on a bed of crisp lettuce leaves, which add a pleasant crunch and a fresh, earthy contrast to the creamy salad.
Tips From My Kitchen
- Don’t skip draining the tuna: Excess water from the can will make your salad watery and dilute the lovely dressing. Press the tuna firmly with a fork in a sieve until no more liquid seeps out. This concentrates the flavour and keeps the texture firm.
- Use a ripe but firm avocado: A perfectly ripe avocado gives you that buttery texture without being mushy. If the avocado is too hard, it won’t break down at all; too soft, and you’ll end up with a green paste. Squeeze it gently — it should give a little, like the palm of your hand.
- Chill your bowl and ingredients: This salad is best served cool. If you have time, pop the drained tuna and chopped vegetables in the fridge for 10 minutes before mixing. A cold bowl also helps keep the avocado from discolouring too quickly.
- Add crunch with celery or cucumber: The soft, creamy texture of the avocado and tuna benefits from something crisp. Celery is my favourite because it adds a mild, peppery flavour, but diced cucumber (seeds removed) works beautifully too, adding a refreshing, watery crunch.
- Make the dressing fresh each time: Lemon juice loses its bright, zesty punch after sitting for a while. Always make the dressing just before you assemble the salad. If you’re meal prepping, store the dressing separately and add it just before serving to keep everything vibrant.
Equipment You’ll Need
- Large salad bowl
- Sharp knife and cutting board
- Salad servers
- Small jar for dressing
- Colander or sieve
- Measuring spoons
- Citrus juicer (optional, but handy)
Delicious Variations to Try
- Spicy Version: To add heat, stir in 1 teaspoon of sriracha or a pinch of dried chilli flakes with the dressing. You can also finely dice a fresh red chilli (seeds removed for less heat) and mix it in with the vegetables. The warmth cuts through the creamy avocado beautifully.
- Vegetarian/Vegan Option: Replace the tuna with one 400g can of chickpeas, drained and rinsed, then roughly mashed with a fork. Alternatively, use 200g of firm tofu, crumbled and pan-fried until golden. The avocado and lemon dressing provide plenty of richness and flavour without any fish.
- Different Protein: If you’re not in the mood for tuna, swap it for the same weight of flaked, cooked salmon (fresh or tinned) or shredded cooked chicken. For another high-protein idea, try serving this salad alongside our Low Calorie High Protein Turkey Meatballs for a hearty meal.
What to Serve With High Protein Tuna Avocado Salad
- Crusty wholemeal bread or rye crackers: Perfect for scooping up every last bit of the creamy salad.
- A side of roasted vegetables: Try roasted cherry tomatoes or asparagus spears for a warm, savoury contrast.
- Extra greens: A simple side of rocket or watercress dressed with a little balsamic vinegar adds a peppery kick.
- Another high-protein dish: Serve this salad as a starter or side to our Garlic Herb High Protein Chicken Thighs for a protein-packed dinner.
Frequently Asked Questions
Can I make this salad ahead of time?
You can prepare the vegetables and dressing up to a day in advance, storing them separately in the fridge. However, I recommend adding the avocado and assembling the salad just before serving. Avocado oxidises quickly and will turn brown, though a squeeze of extra lemon juice can help slow this down for a few hours.
How should I store leftovers?
Place any leftover salad in an airtight container and press a piece of cling film directly onto the surface of the salad before sealing the lid. This minimises air contact and helps prevent the avocado from browning. Eat within 24 hours for the best texture and flavour.
Can I use oil-packed tuna instead of water-packed?
Yes, you can, but you will need to adjust the dressing. If using tuna in olive oil, drain it well but reduce the extra virgin olive oil in the dressing to just 1 tablespoon, as the fish will already be quite rich. The flavour will be more intense and the salad slightly more decadent.
Is this salad suitable for a low-carb diet?
Absolutely. This salad is naturally low in carbohydrates, with the main sources being the avocado and vegetables. It’s an excellent choice for anyone following a keto or low-carb lifestyle, as it provides plenty of healthy fats and protein to keep you satiated without the carbs.
Can I add other vegetables to this salad?
Certainly. This recipe is very forgiving. Try adding finely chopped spring onions for a milder onion flavour, diced cucumber for extra crunch, or even some sweetcorn kernels for a pop of sweetness. Just keep the total volume similar so the dressing ratio remains balanced.
high protein tuna avocado salad
A quick and healthy high-protein salad with flaked tuna, creamy avocado, crunchy vegetables, and a bright lemon-Dijon dressing, served on crisp lettuce.
Ingredients
Method
- Prepare the tuna: Drain the canned tuna thoroughly, pressing it gently with a fork against the side of the colander to remove any excess liquid. You want it flaky and dry, not wet. You'll notice the fish separates easily into tender, pale pink flakes.
- Chop the vegetables: Dice the red onion, celery, and red bell pepper into small, even pieces. The onion should be fine enough that it blends into the salad without overwhelming each bite, releasing a sharp, fresh aroma as you cut.
- Prepare the avocado: Halve the avocados, remove the stones, and scoop the flesh into a large salad bowl. Using a fork, roughly mash about half of the avocado until it's creamy and pale green, then cut the remaining avocado into 1cm cubes. This gives you a lovely mix of smooth and chunky textures.
- Make the dressing: In a small jar, combine the lemon juice, extra virgin olive oil, and Dijon mustard. Screw the lid on tightly and shake vigorously until the dressing looks thick and slightly emulsified, with a pale, creamy colour. Give it a sniff — it should smell bright and tangy.
- Combine everything: Add the flaked tuna, chopped vegetables, and snipped chives to the bowl with the avocado. Pour the dressing over the top. Using two large forks or salad servers, gently fold everything together. You want the dressing to coat every ingredient evenly without breaking the tuna flakes into a mush. The finished salad should look colourful, with specks of red pepper, green chives, and creamy avocado throughout.
- Season and serve: Taste the salad — it should be bright and fresh. Season with salt and plenty of freshly ground black pepper. The pepper adds a gentle warmth that complements the tuna beautifully. Serve immediately on a bed of crisp lettuce leaves, which add a pleasant crunch and a fresh, earthy contrast to the creamy salad.
Notes
For best texture, mash only half the avocado and cube the rest. Serve immediately to prevent browning.
I hope this high protein tuna avocado salad becomes a regular in your kitchen. It’s one of those recipes that feels both effortless and special, perfect for a quick lunch or a light dinner. If you give it a try, I’d love to hear how you got on — leave a comment below and let me know your favourite variation. For another quick, protein-rich meal, you might also enjoy our High Protein Black Bean And Corn Salad.
