Ditch the mayo and upgrade your lunch with this Avocado Tuna Salad Sandwich — creamy, satisfying, and loaded with protein and healthy fats. Mashed avocado brings richness and a boost of nutrients, while canned tuna, red onion, celery, lemon juice, and a pinch of herbs create the perfect balance of texture and flavor. Great on toast, in a sandwich, or wrapped in lettuce for a low-carb option. Ready in under 10 minutes!
Why You’ll Love This Recipe
✔️ Healthier twist—avocado replaces mayo
✔️ 10-minute meal—quick, no-cook lunch
✔️ Restaurant-worthy—gourmet flavors with capers, shallots, and smoked paprika
Yields: 2 sandwiches
Prep time: 15 minutes
Ingredients:
- 1 can (5 ounces) of tuna, drained
- ½ ripe avocado, mashed
- ¼ cup mayonnaise
- ¼ cup finely chopped red onion
- 2 tablespoons finely chopped celery
- 1 tablespoon lemon juice
- ½ teaspoon Dijon mustard
- Salt and pepper to taste
- 4 slices of your favorite bread (such as whole wheat, sourdough, or multigrain)
- Optional: Lettuce leaves, tomato slices, sprouts for serving
Equipment:
- Medium bowl
- Fork
- Knife
- Cutting board
Step-by-step instructions with pictures:
Step 1: Drain the tuna.
- Open the can of tuna and drain all the liquid. Place the drained tuna in a medium bowl.
Step 2: Mash the avocado.
- Cut the avocado in half, remove the pit, and scoop the flesh into the bowl with the tuna. Mash the avocado with a fork until it’s mostly smooth with some small chunks remaining.
Step 3: Add the remaining ingredients.
Add the mayonnaise, chopped red onion, chopped celery, lemon juice, and Dijon mustard to the bowl.
Step 4: Mix well.
- Stir all the ingredients until everything is well combined and the tuna salad has a creamy consistency.
Step 5: Season to taste.
- Add salt and pepper to the tuna salad, starting with a pinch of each. Taste and adjust the seasoning as needed.
Step 6: Assemble the sandwiches.
- Lay out the bread slices. You can lightly toast them if you prefer. Spread the avocado tuna salad evenly onto two slices of bread.
Step 7: Add toppings (optional).
If desired, top the tuna salad with lettuce leaves, tomato slices, or sprouts for extra flavor and texture.
Step 8: Finish the sandwiches.
- Place the remaining two slices of bread on top of the tuna salad and toppings to complete the sandwiches.
Step 9: Serve.
- Cut the sandwiches in half if desired and serve immediately.
Tips for Success
- Avoid browning: Add extra lemon juice to the avocado mixture
- Extra crunch: Top with sliced radishes or sunflower seeds
- Make Ahead: Store tuna salad (without avocado) for 2 days
Nutritional Information
Per serving:
- Calories: 420 | Protein: 22g | Carbs: 38g | Fiber: 9g | Healthy Fat: 22g
More Ways to Enjoy
- Bento Box: Pack with crackers and veggie sticks
- Salad Style: Serve over mixed greens
Enjoy your delicious Avocado Tuna Salad Sandwich!
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