Collaborative Tuna Salad Sandwich with Avocado

By , Test Kitchen Director · Reviewed by AislePrompt Editorial · ·

A refreshing tuna salad packed with fresh vegetables and herbs, served on whole-grain bread for a satisfying and healthy meal that feels like a team effort. This american-inspired salads ready in about 10 minutes pairs (5 oz) cans canned tuna, medium avocado, red onion into a side that holds its own next to almost any main — bright, balanced, and quick enough to slot into a weeknight plate. Each serving lands at about 400 calories and feeds 2, so it slots cleanly next to roasted proteins, grain bowls, or weeknight mains. Tap "Plan a meal with the AI" below to drop this recipe into your week and send the ingredients straight to Instacart. Nutrition values are approximate, calculated from USDA FoodData Central (fdc.nal.usda.gov) — verify against ingredient labels for any health-driven dietary plan.

Prep: 10 min Serves 2 American cuisine 400 cal/serving
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Ingredients

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Instructions

  1. Step 1: Drain and flake 2 cans tuna into a medium bowl, breaking into small pieces with a fork.
  2. Step 2: Dice 1/4 cup red onion and 1/2 cup cucumber into small uniform cubes.
  3. Step 3: Mash 1 medium avocado with 1 tbsp lemon juice until mostly smooth but slightly chunky.
  4. Step 4: Add diced onion, cucumber, 2 tbsp fresh dill, 1 tbsp lemon juice, and 1 tbsp olive oil to the tuna, then mix gently.
  5. Step 5: Fold in the mashed avocado until evenly incorporated, being careful not to overmix.
  6. Step 6: Spread 1/2 cup mixed greens on each slice of whole-grain bread.
  7. Step 7: Divide tuna salad evenly between two slices of bread, then top with remaining bread slices.
  8. Step 8: Cut sandwiches diagonally and serve immediately for optimal freshness.

Frequently asked questions

How long does Collaborative Tuna Salad Sandwich with Avocado take to make?

Total time is about 10 minutes (10 min prep + 0 min cook). Most home cooks find this fits comfortably into a weeknight; double the batch on Sunday for two dinners.

How do I store leftover Collaborative Tuna Salad Sandwich with Avocado?

Cool to room temperature within 2 hours, then store in an airtight container in the fridge for up to 4 days. Reheat covered in a 350°F oven for 10-12 minutes, or microwave at 70% power in 60-second bursts to keep (5 oz) cans canned tuna from drying out.

Can I substitute ingredients in Collaborative Tuna Salad Sandwich with Avocado?

Yes — most ingredients in this recipe have flexible swaps. For oil, use any neutral high-smoke-point oil (avocado, grapeseed, refined coconut). For aromatics, dried herbs at ⅓ the volume of fresh work in a pinch. The full ingredient list is shoppable on Instacart so you can see substitutes in real time.

How do I scale Collaborative Tuna Salad Sandwich with Avocado for a different number of people?

The recipe is written for 2 servings. Multiply each ingredient by (your serving target / 2). Cook time stays roughly the same up to 2x; for 3-4x batches, switch from a skillet to a sheet pan or stockpot so the food isn't crowded — overcrowding steams instead of browns.

What goes well with Collaborative Tuna Salad Sandwich with Avocado?

American salads like this pair well with a simple grain (rice, couscous, or crusty bread), a quick salad with acid (lemon vinaigrette, pickled onions), and a pan sauce or yogurt-based dip. Tap "Plan a meal with the AI" to get specific side suggestions.

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