Collaborative Tuna Salad Sandwich with Avocado

By AislePrompt Editorial · Published 2026-04-06 · Updated 2026-04-06

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 salad recipe, ready in about 10 minutes, pairs canned tuna, avocado, red onion for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 400 calories and feeds 2, so it slots cleanly into a weekly meal plan and pairs well with a quick salad or grain on the side. 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.

Ingredients

• 2 (5 oz) cans canned tuna
• 1 medium avocado
• 1/4 cup red onion
• 1/2 cup cucumber
• 2 tbsp fresh dill
• 1 tbsp lemon juice
• 1 tbsp extra-virgin olive oil
• 4 slices whole-grain bread
• 2 cups mixed greens

The chef’s knife we’d prep this with → Best Chef's Knives for 2026: Top Picks + Buying Guide

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.