If you love a classic tuna melt but want to skip the bread, these Tuna Melt Stuffed Bell Peppers are the perfect solution. They offer all the creamy, savory, and cheesy goodness you crave in a vibrant, low-carb package. It is a refreshing twist on a nostalgic favorite that feels light yet satisfyingly filling.
This recipe is perfect for anyone looking for a quick weeknight dinner or a healthy meal prep option. By swapping out the toasted bread for crunchy, sweet bell peppers, you get an extra boost of vitamins and a delightful texture that complements the tuna salad perfectly. Let’s dive into how you can bring this colorful dish to your table.
Recipe Information
- Prep Time: 15 minutes
- Cook Time: 25 minutes
- Total Time: 40 minutes
- Servings: 4
- Difficulty Level: Easy
Nutrition Information
- Calories per serving: 285 kcal
- Protein: 26g
- Carbohydrates: 9g
- Fat: 16g
- Fiber: 3g
- Sugar: 5g
- Sodium: 520mg
Why Make This Tuna Melt Stuffed Bell Peppers
These stuffed peppers are a nutritional powerhouse. They are packed with high-quality protein from the tuna and loaded with Vitamin C from the bell peppers. Because they are naturally low in carbohydrates, they are a fantastic option for those following a keto or gluten-free lifestyle without feeling like you are missing out on comfort food.
Another reason to love this recipe is its versatility. It is an “empty the fridge” kind of meal where you can add different herbs, spices, or leftover veggies into the tuna mix. Plus, they look absolutely beautiful on a plate, making a simple lunch feel like a gourmet treat.
How to Make Tuna Melt Stuffed Bell Peppers
Making this dish is incredibly simple and requires only a few basic kitchen tools. You will essentially be making a high-quality tuna salad, stuffing it into fresh pepper boats, and baking them until the cheese is bubbly and golden.
Ingredients
- 4 large bell peppers (any color), halved and seeds removed
- 3 cans (5 oz each) tuna in water, drained well
- 1/2 cup mayonnaise
- 1/4 cup celery, finely diced
- 2 tablespoons red onion, minced
- 1 tablespoon Dijon mustard
- 1 tablespoon fresh lemon juice
- 1/2 teaspoon garlic powder
- Salt and black pepper to taste
- 1 1/2 cups shredded sharp cheddar cheese
- Fresh parsley, chopped (for garnish)
Directions
Step 1: Oven and Pepper Preparation
Preheat your oven to 375°F (190°C). Line a large baking dish with parchment paper or lightly grease it with non-stick spray. Wash the bell peppers, cut them in half from stem to base, and scoop out the seeds and membranes to create “boats.”
Step 2: Mixing the Tuna Salad
In a medium mixing bowl, flake the drained tuna with a fork. Add the mayonnaise, diced celery, red onion, Dijon mustard, lemon juice, garlic powder, salt, and pepper. Stir everything together until well combined and creamy.
Step 3: Stuffing the Peppers
Spoon the tuna mixture evenly into each bell pepper half, pressing down slightly to ensure they are full. Arrange the stuffed peppers in the prepared baking dish so they are sitting upright.
Step 4: Baking
Cover the baking dish with foil and bake for 20 minutes. This allows the peppers to soften slightly without the tuna drying out. After 20 minutes, remove the foil.
Step 5: Melting the Cheese
Sprinkle a generous amount of shredded cheddar cheese over the top of each stuffed pepper. Return the dish to the oven, uncovered, and bake for another 5 to 7 minutes, or until the cheese is melted and bubbly. For a crispy top, you can broil them for the last 1-2 minutes.
Step 6: Garnish and Serve
Remove the peppers from the oven and let them cool for a few minutes. Garnish with fresh chopped parsley before serving warm.
How to Serve Tuna Melt Stuffed Bell Peppers
These peppers are a complete meal on their own, but they also pair beautifully with a light side. Consider serving them alongside a crisp green garden salad or a bowl of tomato soup. For those who aren’t watching carbs, a side of sweet potato fries or a crusty piece of garlic bread makes for a heartier feast.
How to Store Tuna Melt Stuffed Bell Peppers
If you have leftovers, place them in an airtight container and store them in the refrigerator for up to 3 days. To reheat, place them in the oven at 350°F until warmed through, or use the microwave for a quicker option. Note that the peppers will become softer upon reheating. We do not recommend freezing this dish, as the texture of the peppers and mayonnaise will change significantly.
Expert Tips for Perfect Tuna Melt Stuffed Bell Peppers
To ensure your peppers aren’t too watery, make sure to drain the tuna extremely well before mixing. If you prefer a very soft pepper, you can pre-roast the empty pepper halves for 10 minutes before stuffing them. Also, using a block of cheddar that you grate yourself will result in a much smoother melt compared to pre-shredded bagged cheese.

Delicious Variations
Feel free to get creative with your fillings! You can swap the cheddar for pepper jack if you want a spicy kick, or add diced jalapeños directly into the tuna mix. For a Mediterranean twist, swap the mayo for Greek yogurt and add chopped olives, feta cheese, and dried oregano. You can also mix in some cooked quinoa or rice if you want to stretch the filling further.
Frequently Asked Questions
Q: Can I use canned salmon instead of tuna?
Yes, canned salmon works perfectly in this recipe and provides a different but equally delicious flavor profile and boost of Omega-3s.
Q: What is the best color of bell pepper to use?
Red, orange, and yellow peppers are sweeter and pair beautifully with the savory tuna. Green peppers are slightly more bitter but still work well if that is what you have on hand.
Q: How do I prevent the peppers from tipping over in the oven?
If your peppers are wobbly, you can trim a tiny sliver off the bottom of the pepper (be careful not to cut a hole!) to create a flat base, or nestle them closely together in the baking dish.
Q: Can I make the tuna salad ahead of time?
Absolutely! You can prepare the tuna mixture up to 24 hours in advance and store it in the fridge. Stuff and bake the peppers when you are ready to eat.
Q: Is there a mayonnaise substitute for this recipe?
Yes, you can use plain Greek yogurt or mashed avocado for a creamier, mayo-free version. Keep in mind this will slightly change the tanginess of the dish.
Conclusion
Tuna Melt Stuffed Bell Peppers are a wonderful way to enjoy a classic comfort meal in a healthier, more colorful way. They are simple to prepare, budget-friendly, and sure to please everyone at the table. Whether you are looking for a light lunch or a quick dinner, this recipe is a reliable winner that you will want to make again and again. Enjoy your nutritious and delicious meal!

Tuna Melt Stuffed Bell Peppers
- Cook Time: 40 minutes
- Total Time: 40 minutes
- Diet: Keto, Gluten-Free, Low-Carb
Ingredients
- 4 large bell peppers (any color), halved and seeds removed
- 3 cans (5 oz each) tuna in water, drained well
- 1/2 cup mayonnaise
- 1/4 cup celery, finely diced
- 2 tablespoons red onion, minced
- 1 tablespoon Dijon mustard
- 1 tablespoon fresh lemon juice
- 1/2 teaspoon garlic powder
- Salt and black pepper to taste
- 1 1/2 cups shredded sharp cheddar cheese
- Fresh parsley, chopped (for garnish)
Instructions
- Preheat your oven to 375°F (190°C). Line a large baking dish with parchment paper or lightly grease it with non-stick spray. Wash the bell peppers, cut them in half from stem to base, and scoop out the seeds and membranes to create “boats.”
- In a medium mixing bowl, flake the drained tuna with a fork. Add the mayonnaise, diced celery, red onion, Dijon mustard, lemon juice, garlic powder, salt, and pepper. Stir everything together until well combined and creamy.
- Spoon the tuna mixture evenly into each bell pepper half, pressing down slightly to ensure they are full. Arrange the stuffed peppers in the prepared baking dish so they are sitting upright.
- Cover the baking dish with foil and bake for 20 minutes. This allows the peppers to soften slightly without the tuna drying out. After 20 minutes, remove the foil.
- Sprinkle a generous amount of shredded cheddar cheese over the top of each stuffed pepper. Return the dish to the oven, uncovered, and bake for another 5 to 7 minutes, or until the cheese is melted and bubbly. For a crispy top, you can broil them for the last 1-2 minutes.
- Remove the peppers from the oven and let them cool for a few minutes. Garnish with fresh chopped parsley before serving warm.




