Tuna Stuffed Avocado Recipe — 40g Protein, No Cooking Needed
Two avocado halves, one can of tuna, ten minutes. Press the tuna dry before mixing — that’s what keeps it firm and never watery.
Apr 27, 2026
Ingredients
Step-by-Step Method
Drain and Press the Tuna
Open both cans of tuna and drain them through a fine sieve. Transfer the tuna to a clean paper towel and press firmly with another paper towel to remove as much moisture as possible. This step is what most recipes skip — residual liquid turns the filling watery within minutes. Repeat the press once more if the tuna still feels wet.
Prep the Avocados
Halve each avocado lengthwise and remove the pit. Use a large spoon to scoop out a small additional amount of flesh from the center cavity, creating a deeper bowl shape. Set the scooped flesh aside — it can be mixed into the tuna filling or mashed separately as extra. Score the remaining avocado flesh lightly with a knife without cutting through the skin.
Mix the Tuna Filling
Combine the pressed tuna, Greek yogurt or mayonnaise, Dijon mustard, lemon juice, diced celery, and diced red onion in a mixing bowl. Stir until evenly combined. The mixture should hold its shape on a spoon — if it looks loose, add another half tablespoon of yogurt. Season with salt at this point, right before filling, to avoid drawing out moisture.
Stuff the Avocados
Spoon the tuna filling generously into each avocado half, pressing it slightly into the cavity so it sits above the rim. Divide evenly across all four halves. The filling should be compact enough that it doesn't fall off when you pick up the avocado half. If the avocado halves feel unstable on the plate, trim a thin slice off the rounded underside to create a flat base.
Garnish and Season Check
Squeeze a small additional amount of lemon juice over the filled avocados to keep them from browning. Add a light sprinkle of black pepper or chili flakes if you want heat. Tear fresh coriander leaves and place them directly on top of the filling — don't chop them fine, larger pieces hold up better visually and in flavor. Taste one bite before serving and adjust salt if needed.
Serve Immediately
Plate the stuffed avocado halves on a bed of arugula or serve alongside sliced cherry tomatoes. Eat within 20-30 minutes of assembling for the best texture — the avocado starts to oxidize around the cut edges after that. Serve at room temperature, not cold from the fridge, as chilled avocado mutes the flavor of the filling.
Frequently Asked Questions
Can I make tuna stuffed avocado ahead of time?
You can make the tuna filling up to two days ahead and refrigerate it in an airtight container. Don’t cut the avocados until you’re ready to serve — they brown quickly once halved, and no amount of lemon juice will keep them looking fresh past 30 minutes. Assemble right before eating.
Why did my tuna stuffed avocado filling turn watery?
The two most common causes are not pressing the tuna dry before mixing, and seasoning the filling too early. Salt draws moisture out of the mixture over time. A third reason is using low-fat yogurt, which has more liquid than full-fat versions. Press the tuna thoroughly, season just before stuffing, and use full-fat Greek yogurt or mayonnaise.
What can I substitute in this recipe?
Greek yogurt works in place of mayonnaise and adds more protein, though the flavor is tangier. Canned salmon or cooked shredded chicken works instead of tuna — the protein count stays similar but the flavor is milder. Skip the celery if you don’t have it, but keep the red onion — it adds crunch that the filling needs. Lime juice works instead of lemon with no real difference in result.
How long does tuna stuffed avocado stay fresh?
Once assembled, eat within 30 minutes. The tuna filling alone keeps for 2 days in the fridge. Cut avocado deteriorates quickly regardless of lemon juice or plastic wrap — make only what you’ll eat in one sitting.
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