Open Faced Tuna Sandwich with Avocado

Pro tips

• Toast the bread until it's golden and crisp—this prevents it from becoming soggy when topped with the tuna mixture.
• Drain the canned tuna thoroughly and press it gently with a fork to remove excess moisture, which keeps the sandwich from becoming watery.
• Mince the vegetables finely so they distribute evenly through the tuna salad and don't overshadow the other flavors.
• Add the red wine vinegar to brighten the tuna salad and balance the richness of the mayo and avocado.

Substitutions

• Hellman's Light mayo → vegan mayo (makes it egg-free)
• Multi-grain bread → sourdough or whole wheat bread (changes flavor profile slightly)
• Albacore tuna → chunk light tuna in water (softer texture, milder flavor)
• Red onion → white onion or shallot (less sharp flavor)

Storage & make-ahead

Store the tuna salad mixture in an airtight container in the refrigerator for up to 2 days. Toast bread and assemble immediately before serving.

Can I make this sandwich ahead of time?

Prepare the tuna salad mixture up to 2 hours ahead and refrigerate. Toast bread and assemble just before eating to keep it from getting soggy.

What's the best bread for this sandwich?

Multi-grain, sourdough, or whole wheat work best. Gluten-free bread is a good option if needed. Toast it to provide structure and prevent sogginess from the tuna mixture.

Can I use canned chunk light tuna instead of albacore?

Yes. Chunk light tuna works fine; it has a slightly softer texture and milder flavor than albacore but tastes equally good in this recipe.

How do I keep the avocado from browning?

Slice the avocado just before assembling the sandwich. You can lightly brush it with lemon or lime juice to slow oxidation if making it a few minutes ahead.

Is this recipe vegan or dairy-free?

Use vegan mayo instead of Hellm's Light mayo to make it egg-free and vegan-friendly. All other ingredients are naturally plant-based or already meat-free.