Tuna Melts on Avocado are the perfect quick and nutritious meal for busy days. This recipe combines the rich flavors of tuna and cheese with the creamy texture of avocado, creating a satisfying dish that’s ready in just 15 minutes. Whether you’re looking for a healthy snack or a light lunch, these tuna melts are sure to become a favorite.
Why You’ll Love This Recipe
- Quick and Easy: Ready in just 15 minutes, perfect for busy schedules.
- Nutritious: Packed with protein from tuna and healthy fats from avocado.
- Flavorful Combination: The savory tuna and melted cheese complement the creamy avocado beautifully.
- Versatile: Easily customizable with your favorite ingredients and dietary needs.
- Delicious Texture: The contrast between the melted cheese and the soft avocado is irresistible.
- Diet-Friendly: Keto-friendly and gluten-free, making it suitable for various diets.
Ingredients & Preparation Notes
- Tuna: Opt for tuna packed in water for a lighter option. Drain well to avoid excess moisture.
- Mayonnaise: You can substitute with Greek yogurt for a healthier twist.
- Red Onion and Celery: These add crunch and flavor to the tuna mixture. Finely chop for even distribution.
- Lemon Juice: Freshly squeezed lemon juice adds a bright, tangy note.
- Salt and Black Pepper: Season to taste, enhancing the flavors of the other ingredients.
- Avocados: Choose ripe but firm avocados to hold the tuna mixture well.
- Shredded Cheddar Cheese: Melts beautifully under the broiler, adding a rich, gooey texture.
- Fresh Parsley: A fresh garnish that adds color and a hint of freshness.
For substitutions, consider using light mayo or Greek yogurt if you’re watching your calorie intake. If you prefer a different cheese, mozzarella or Swiss can work well, though they may alter the flavor slightly.
Professional Tips & Techniques
- Broiling: Broil the tuna melts on high for 3-5 minutes to achieve perfectly melted cheese without overcooking the avocado. Keep an eye on them to prevent burning.
- Temperature: Preheat your broiler to ensure even cooking. The high heat quickly melts the cheese while keeping the avocado fresh.
- Filling: Avoid overfilling the avocado halves to prevent the tuna mixture from spilling during broiling. A heaping spoonful is usually enough.
- Visual Cues: Look for bubbly, golden cheese as a sign of doneness. The avocado should still be bright green and slightly firm.
- Common Mistake: Don’t use overly ripe avocados, as they may become too soft under the broiler and lose their shape.
Recipe Variations
- Spicy Tuna Melts: Add a dash of hot sauce or finely chopped jalapeños to the tuna mixture for a spicy kick.
- Mediterranean Style: Mix in some chopped olives, sun-dried tomatoes, and a sprinkle of oregano for a Mediterranean twist.
- Vegetarian Option: Substitute the tuna with mashed chickpeas for a vegetarian-friendly version.
- Gluten-Free: This recipe is naturally gluten-free, but ensure any added ingredients or serving suggestions are also gluten-free.
- Summer Variation: Add diced tomatoes and fresh basil to the tuna mixture for a refreshing summer flavor.
- Cheese Variations: Try different cheeses like mozzarella or Swiss for a different taste and texture.
- Herb Infusion: Mix in fresh herbs like dill or cilantro for added flavor and freshness.
- Crunchy Topping: Sprinkle crushed tortilla chips or breadcrumbs on top before broiling for added crunch.
Serving Suggestions
- As an Appetizer: Serve these tuna melts on avocado as a starter at your next gathering. They’re perfect for sharing.
- Light Lunch: Pair with a side of mixed greens or a simple salad for a satisfying light meal.
- Presentation Tips: Arrange the avocado halves on a platter and garnish with a sprinkle of paprika or a drizzle of balsamic glaze for an elegant touch.
- Pairing Suggestions: Serve with a crisp white wine like Sauvignon Blanc or a light beer to complement the flavors.
Storage & Make-Ahead Tips
- Storage: Store any leftovers in an airtight container in the refrigerator for up to 2 days. The avocado may brown slightly, but it will still be safe to eat.
- Shelf Life: Consume within 2 days for the best quality and flavor.
- Make-Ahead: You can prepare the tuna mixture ahead of time and store it in the fridge. When ready to serve, simply fill the avocado halves and broil.
- Freezing: While you can freeze the tuna mixture, it’s best to assemble and broil the melts fresh for the best texture and flavor.
Frequently Asked Questions
Q: Can I make this ahead of time?
Yes, you can prepare the tuna mixture in advance and store it in the fridge. Fill the avocado halves and broil just before serving for the best results.
Q: What can I use instead of mayonnaise?
Greek yogurt is a great alternative to mayonnaise, offering a lighter texture and added protein.
Q: How do I know when the cheese is done?
Look for bubbly, golden cheese. It should take about 3-5 minutes under the broiler.
Q: Can I use a different type of cheese?
Absolutely! Mozzarella or Swiss cheese can be used, though they may change the flavor slightly.
Q: Is this recipe suitable for a keto diet?
Yes, this recipe is keto-friendly due to its low carb and high-fat content from the avocado and cheese.
Q: How do I prevent the avocado from browning?
Brush the cut surfaces of the avocado with lemon juice to help prevent browning. Assemble and broil just before serving.
Q: Can I add other ingredients to the tuna mixture?
Yes, feel free to add ingredients like chopped olives, sun-dried tomatoes, or herbs to customize the flavor.
Q: What should I do if my avocado is too soft?
If your avocado is too soft, it may not hold its shape well under the broiler. Use a firmer avocado or mash it and serve the tuna melt on toast instead.
Conclusion
Tuna Melts on Avocado are a delightful and nutritious meal that’s quick to prepare and delicious to eat. The combination of savory tuna, melted cheese, and creamy avocado makes for a satisfying dish that’s perfect for any occasion. Give this recipe a try and enjoy a tasty, healthy meal in no time.
Don’t forget to share your creations on social media and let us know how you liked it! For an extra touch, serve with a side of mixed greens to round out the meal.

Tuna Melts on Avocado
Equipment
- Baking sheet
- Mixing bowl
- Spoon
Ingredients
- 2 cans tuna packed in water, drained
- 1/4 cup mayonnaise or Greek yogurt for a lighter option
- 2 tablespoons red onion finely chopped
- 2 tablespoons celery finely chopped
- 1 tablespoon lemon juice freshly squeezed
- 1/4 teaspoon salt
- 1/4 teaspoon black pepper
- 2 avocados halved and pitted
- 1 cup shredded cheddar cheese
- 2 tablespoons fresh parsley chopped, for garnish
Instructions
- Preheat your broiler to high. In a medium bowl, mix the tuna, mayonnaise, red onion, celery, lemon juice, salt, and black pepper until well combined.
- Place the avocado halves on a baking sheet, cut side up. Spoon the tuna mixture onto each avocado half, ensuring it's evenly distributed.
- Sprinkle shredded cheddar cheese over the tuna-filled avocados. Place under the broiler for about 3-5 minutes, or until the cheese is melted and bubbly.
- Remove from the broiler, garnish with fresh parsley, and serve immediately.