Hello there! I’m Amaya, and I’m so excited to share one of our family’s favorite low-carb meals with you today: tuna-stuffed bell peppers. This dish is a true gem. It’s incredibly flavorful. It’s also wonderfully satisfying. We created Whisk Daily to share our love for food. This recipe embodies that spirit perfectly. It’s healthy, quick, and always a hit at our table. These peppers are a testament to simple ingredients making something truly special.
Why You’ll Love These Tuna-Stuffed Bell Peppers
These tuna-stuffed bell peppers are a winner for so many reasons!
- They are super quick to prepare.
- They make a healthy and balanced meal.
- The flavor combination is simply delicious.
- You can easily customize them with your favorite additions.
- They’re a fantastic low-carb dinner option.
It’s a dish that truly delivers on taste and convenience.
A Taste of Tradition: Our Story with Tuna-Stuffed Bell Peppers
I remember when Kenji and I first started cooking together. We were always looking for ways to make meals both healthy and exciting. Bell peppers were always a favorite in our home. They are so versatile. One evening, I decided to fill them with a seasoned tuna salad. Kenji loved them immediately! He said they reminded him of the simple, delicious meals we grew up with in Kyoto. It’s a dish that brings back so many fond memories. It represents our journey of blending traditions. It’s a taste of home, no matter where we are.
Gathering Your Ingredients for Tuna-Stuffed Bell Peppers
To create these delightful tuna-stuffed bell peppers, let’s gather everything we need. You’ll need four colorful bell peppers. Any color works beautifully here. Make sure they are fresh and firm. We’ll also need one can of tuna, about 5 ounces. It’s important to drain it very well. This keeps the filling from being watery. For the creamy binder, we’ll use 1/4 cup of mayonnaise. Full-fat mayo gives the best flavor. I like to use 2 tablespoons of finely chopped celery. It adds a nice crunch. Finely chopped yellow onion, about 1 tablespoon, brings a little zing. Sweet pickle relish, just 1 tablespoon, adds a touch of sweetness. A half teaspoon of Dijon mustard gives a subtle tang. Of course, we need salt and freshly ground black pepper. Seasoning is key! If you like a cheesy topping, have 1/4 cup of shredded sharp cheddar cheese ready. It’s totally optional but delicious.

Ingredient Notes and Substitutions for Tuna-Stuffed Bell Peppers
When making these tuna-stuffed bell peppers, feel free to get creative with your ingredients! For the tuna, I usually use chunk light tuna packed in water. Tuna packed in oil works too; just be sure to drain it well. If you’re not a fan of mayonnaise, you can try Greek yogurt for a lighter option. It gives a similar creaminess. For the relish, if you don’t have sweet pickle relish, you can chop up a dill pickle and add a tiny pinch of sugar. Chopped dill pickles alone also work for a less sweet flavor. If you don’t have Dijon mustard, a little yellow mustard will do in a pinch. You can also add a pinch of paprika or a dash of hot sauce for a little extra kick. Sometimes I even add a few chopped olives for a briny twist.
Step-by-Step Guide to Making Tuna-Stuffed Bell Peppers
Let’s get cooking! Making these tuna-stuffed bell peppers is a breeze. First, preheat your oven to 375°F (190°C). This gives it time to get nice and hot.

Next, prepare your bell peppers. Cut them in half lengthwise. Remove all the seeds and the white membranes inside. A spoon works great for scraping them clean.
Now, let’s make the filling. In a medium bowl, combine the drained tuna. Add the mayonnaise, chopped celery, and chopped onion. Stir in the sweet pickle relish and Dijon mustard. Season with salt and pepper to your liking. Mix everything until it’s well combined. Taste it to make sure the seasoning is just right.
Spoon this delicious tuna mixture evenly into each bell pepper half. Fill them up generously!

Place the stuffed peppers into a baking dish. They should fit snugly. This helps them cook evenly.
Bake for about 25 to 30 minutes. You want the peppers to be tender. The tuna mixture should be heated through. If you’re using cheese, sprinkle it over the top during the last 5 minutes of baking. Watch it melt and get golden.
Tips for Perfect Tuna-Stuffed Bell Peppers
Want your tuna-stuffed bell peppers to be absolutely perfect? Here are a few tricks I’ve learned.
- To keep the peppers from getting too mushy, you can lightly steam them for a few minutes before stuffing.
- Always taste your tuna mixture before stuffing. Adjust salt and pepper as needed.
- Make sure the oven is fully preheated. This ensures even cooking.
- Check for doneness by gently poking a pepper with a fork. It should be tender but not falling apart.
These little tips make a big difference!
Frequently Asked Questions about Tuna-Stuffed Bell Peppers
Got questions about these yummy tuna-stuffed bell peppers? I’ve got answers!
Can I use different types of peppers for tuna-stuffed bell peppers?
Absolutely! While sweet bell peppers are lovely, you can use any color you like. Red, yellow, and orange peppers tend to be sweeter. Green peppers have a slightly more robust flavor. You could even try poblano peppers for a mild heat. Just adjust baking time for size and thickness.
How long do tuna-stuffed bell peppers last in the refrigerator?
Leftovers are great! Store them in an airtight container. They should stay fresh for about 2-3 days. Reheating is best done in the oven or a toaster oven. This keeps the peppers from getting soggy.
Can I make the tuna filling ahead of time?
Yes, you can! Prepare the tuna salad mixture up to a day in advance. Keep it covered in the fridge. Stuff the peppers just before baking. This prevents the peppers from releasing too much moisture into the filling. It makes dinner prep even easier!
Serving and Storing Your Tuna-Stuffed Bell Peppers
These tasty tuna-stuffed bell peppers are wonderful on their own. They also pair nicely with a simple side salad. A crisp green salad with a light vinaigrette is perfect. For a heartier meal, consider serving them with some cauliflower rice. It keeps the low-carb theme going strong.

Got leftovers? That’s great! Store them in an airtight container in the refrigerator. They’ll keep well for about two to three days. When you’re ready to reheat, I find the oven or a toaster oven works best. It helps keep the peppers from getting too soft. Just warm them through until heated properly. Enjoy your delicious meal again!
Estimated Nutritional Information for Tuna-Stuffed Bell Peppers
Please remember that the nutritional values for these tuna-stuffed bell peppers are estimates. They can change based on the specific brands you use and any ingredient swaps you make. Generally, one stuffed pepper half (without cheese) contains about 200-250 calories. You can expect around 15g of protein and 10g of carbohydrates. This makes them a great choice for a satisfying, low-carb meal.
PrintFlavorful Tuna-Stuffed Bell Peppers: 4 Easy Steps
Enjoy a delicious low-carb dinner with these flavorful tuna-stuffed bell peppers. Seasoned tuna salad is baked inside sweet bell peppers for a satisfying and healthy meal.
- Prep Time: 15 minutes
- Cook Time: 30 minutes
- Total Time: 45 minutes
- Yield: 4 servings
- Category: Main Course
- Method: Baking
- Cuisine: American
- Diet: Low Carb
Ingredients
- 4 bell peppers
- 1 can (5 ounces) tuna, drained
- 1/4 cup mayonnaise
- 2 tablespoons chopped celery
- 1 tablespoon chopped onion
- 1 tablespoon sweet pickle relish
- 1/2 teaspoon Dijon mustard
- Salt and pepper to taste
- 1/4 cup shredded cheddar cheese (optional)
Instructions
- Preheat oven to 375°F (190°C).
- Cut bell peppers in half lengthwise and remove seeds and membranes.
- In a medium bowl, combine drained tuna, mayonnaise, celery, onion, relish, Dijon mustard, salt, and pepper. Mix well.
- Spoon the tuna mixture evenly into the bell pepper halves.
- Place stuffed peppers in a baking dish.
- Bake for 25-30 minutes, or until peppers are tender and tuna mixture is heated through.
- If using, sprinkle with cheddar cheese during the last 5 minutes of baking.
Notes
- You can use any color bell peppers you like.
- For a spicier kick, add a pinch of cayenne pepper to the tuna mixture.
- Feel free to add other vegetables like chopped carrots or peas to the tuna salad.
Nutrition
- Serving Size: 1 stuffed pepper half
- Calories: approx. 200-250 (without cheese)
- Sugar: approx. 5g
- Sodium: approx. 400mg
- Fat: approx. 15g
- Saturated Fat: approx. 3g
- Unsaturated Fat: approx. 12g
- Trans Fat: 0g
- Carbohydrates: approx. 10g
- Fiber: approx. 2g
- Protein: approx. 15g
- Cholesterol: approx. 30mg




























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