Easy Tunacado Sandwich (5-Minute High Protein Lunch)

If you’re looking for a quick, fresh, and filling lunch that doesn’t require turning on the oven or stovetop, this tunacado sandwich is the perfect solution. It comes together in just five minutes and is packed with protein, healthy fats, and bright flavor!

The creamy tuna mixture is balanced with lemon juice, briny capers, and dried dill, then layered onto toasted sourdough with sliced avocado and juicy tomato. It’s simple, satisfying, and ideal for busy days when you still want something nourishing and delicious.

Why you’ll love this tunacado sandwich

• Ready in just 5 minutes
• High in protein and healthy fats
• Fresh, bright, and creamy flavor
• Perfect for quick lunches or light dinners
• Tuna mixture can be made ahead for meal prep

Make-ahead tip

The tuna mixture can be prepared ahead of time and stored in an airtight container in the refrigerator for up to 3 to 4 days. Give it a quick stir before using. This makes it easy to assemble sandwiches, wraps, or snack plates throughout the week.

Tips for the best tunacado sandwich

• Lightly salt the tomato slices to enhance flavor
• Add extra lemon juice for more brightness
• Use very ripe avocado for the creamiest texture
• Toasting the sourdough adds the perfect crunch and structure

Print Recipe

Easy Tuna Avocado Sandwich (5-minute high-protein lunch)

If you’re looking for a quick, fresh, and filling lunch that doesn’t require turning on the oven or stovetop, this tunacado sandwich is the perfect solution. It comes together in just five minutes and is packed with protein, healthy fats, and bright flavor.

Prep Time5 minutes mins

Total Time5 minutes mins

Course: Lunch

Keyword: sandwich

Servings: 1 sandwich

Author: Winnie Kison

Ingredients

For the tuna mixture:

• 1 can tuna drained
• 1 to 2 tablespoons mayo
• 1 teaspoon lemon juice or to taste
• 1 to 2 teaspoons capers chopped
• Pinch dried dill
• Sea salt to taste
• Black pepper to taste

For the sandwich:

• Sourdough bread slices toasted
• Sliced avocado
• Sliced tomato

Instructions

• In a small bowl, combine the drained tuna, mayo, lemon juice, chopped capers, dried dill, sea salt, and black pepper. Mix well until creamy and evenly combined. Taste and adjust seasoning if needed.
• Toast the sourdough slices until golden and crisp. Spread a generous layer of the tuna mixture onto one slice of toast. Top with sliced avocado and tomato, then finish with the second slice of toasted sourdough.
• Slice and enjoy immediately while the bread is still warm and crisp.