Tomato Bun Tuna Melts – Delish (Video)

***I am a Pampered Chef Consultant – please contact me by clicking any of the buttons above ​when you would like to schedule your virtual or in-person party, fundraiser or wedding shower, or to place an order. If you have any questions about the products you already have, or want some information on starting your own PC business, I can help you with that as well!!***

Recipes may have been adapted, either using a different cooking method and/or pantry seasonings from the Pampered Chef.  Appropriate credit has been given to the recipe blogger I have found it from, along with links back to the original source.  Let’s get cooking!

Subscribe below to get emails whenever I share new recipes and tutorials!

This keto recipe uses a tomato for the bun, filled with delicious tuna salad and loads of melty cheese! Another fabulous recipe from Delish, I made this with one of my keto friends in mind, and it did not disappoint! I love that it was super easy to put together, and very filling.  Of course, I substituted Greek yogurt for the mayonnaise, and it was delicious.

For this recipe, I used my Modular Sheet Pans and our new Extra-Large Scoop:

Modular Sheet Pans:

Better Sheet Pan Meals

When it comes to sheet pan dinners, three pans are better than one. If you ever put everything on one pan only to find the chicken cooked to perfection but the green beans are burnt, or moisture from veggies has made your crispy fish soggy, it’s time for modular pans. With these pans, not everything has to hang out in the oven for the same amount of time; you can add foods at different stages and season them separately, so everything turns out perfect.

You get three high-quality sheet pans—one that’s 8¾” x 12¾” (22.5 cm x 32 cm) pan and two that are 8¾” x 6¼” (22.5 cm x 16 cm), so you’ll have a variety of cooking options. The smaller pans also fit in our Deluxe Air Fryer. These pans are made from the same heavy-gauge steel as our other popular sheet pans, so they won’t warp in the broiler and will cook food evenly. The high sides keep food from overflowing and the high-quality coating prevents food from sticking and keeps your pan looking great. They nest too, for easy storage.

Product Details

• Heavy-gauge aluminized steel resists corrosion and provides even heat distribution
• Includes one 8¾” x 12¾” (22.5-cm x 32-cm) pan and two 8¾” x 6¼” (22.5-cm x 16-cm) pans
• Broiler-safe to 550°F (290°C). Safe to use in convection and conventional ovens
• Freezer-safe
• Dishwasher-safe

Extra-Large Scoop:

Jumbo Cookie Scoop

This heavy-duty scoop is the tool you need! With a 4 tbsp (60-mL) capacity, it’s the perfect size for jumbo cookies, portioning batter into baking pans, or even making meatballs. It’s also great for serving mashed potatoes, other side dishes, and desserts!

Stainless Steel Scoops

Our heavy-duty stainless scoops are the perfect way to portion everything from batter and dough to filling and salads. The squeeze-action handle makes them easy to use, even one-handed, and the scraping blade ensures every last bit comes out.

Guarantee

• 1-year guarantee

Product Details

• Approximately 4 tbsp (60 mL)
• Heavy-duty stainless steel resists rust
• Squeeze-action handle with scraping blade
• Dishwasher-safe

Click here to get your Modular Sheet Pans, and here to get your my Extra-Large Scoop today. You’ll be glad you did.

Ingredients

• 12-ounces of canned tuna, drained
• ¼ red onion, finely chopped
• 1 tablespoon flat parsley chopped
• ¼ cup Greek yogurt
• 1 tablespoon Dijon mustard
• 1 lemon, juiced
• Kosher salt
• Freshly ground black pepper
• 4 large tomatoes
• 2 cups shredded cheddar cheese

Instructions

Heat broiler.

Drain tuna, chop onion and parsley.  Shred cheese, set aside. In a large bowl, combine tuna, onion, parsley, Greek yogurt, mustard, lemon juice and salt and pepper.

Slice tomatoes into thirds (save the middle slices for later). Place tops and bottoms onto baking sheet, season to taste with salt and pepper. 

Use Extra-Large Scoop to add tuna to bottom half of tomatoes.  Top tuna with shredded cheese.

Broil 4-5 minutes, until cheese is melted and golden. Garnish tuna with parsley and cover with top half of tomato, and serve immediately.

That’s a wrap! I’d love to hear your thoughts, so please leave a comment below. Your feedback means a lot to me! Together, we’re making kitchen life easier, one Pampered Chef tool at a time.

Happy cooking!
— imapampchef

***I am a Pampered Chef Consultant – please contact me when you would like to schedule your virtual or in-person party, fundraiser or wedding shower, or to place an order. If you have any questions about the products you already have, or want some information on starting your own PC business, I can help you with that as well!!***

Here’s the scoop on all our March 2026 Host and Guest specials!!

APRIL – New Spring Finds – Shop our newest and coolest kitchen tools!

Made to Last. Meant to Love. Save on our best sellers!

Shop New Products

For HOSTS – Get 60% off any product or set—including new products! See details.

Hosting a party is the perfect way to treat yourself to must-have kitchen tools, and find gift-worthy sets for upcoming celebrations! 👉 Ready to plan your in-home or virtual party? Click here to get started:
👇

🎁GUESTS GIFT WITH PURCHASE 🎁

• Spend $90 – Get a $15 account credit on your next order!*
• PLUS – FREE STANDARD SHIPPING with any $150 purchase. Offer ends April 30th. See details.

🎉 Don’t wait—these deals won’t last! 🎉

I’d love to hear from you! Please drop a comment below or send me a direct message to place an order or schedule your in-home, virtual, or catalog party with me. I’m excited to help you earn some fantastic FREE and discounted products!