Tuna Niçoise Melt

This Tuna Niçoise Melt brings together elements from a Niçoise salad and a tuna melt to create a flavorful twist on two classics. It features protein-packed tuna mixed with creamy mayonnaise and Greek-style yogurt, which is then layered with briny olives, chopped hard-boiled egg, juicy tomato slices and a layer of fontina cheese. The combination delivers a perfect balance of salty, savory and tangy notes, with the cheese adding a rich, gooey finish that ties it all together. For consistent, delicious results, follow our tried-and-true tips below.

Tips from the EatingWell Test Kitchen

These are the key tips we learned while developing and testing this recipe in our Test Kitchen to make sure it works, tastes great and is good for you too! 

• Niçoise olives are small, dark olives known for their briny, salty flavor. They are often not pitted, so you may have to remove the pits yourself. Kalamata olives are a good substitute.
• To hard-boil eggs, place large eggs in a single layer in a saucepan and cover with water by 1 inch. Set the pan over medium-high heat and bring to a boil. When the water just begins to bubble vigorously, reduce the heat to achieve the barest simmer and cook for 10 minutes.
• Sourdough adds a nice tangy flavor, but any sturdy, crusty bread will work just as well. Avoid soft sandwich bread, as it can turn soggy.

Nutrition Notes

• Tuna is an excellent source of protein and omega-3 fatty acids. Omega-3 fatty acids can help lower inflammation and support heart health. Eating more tuna may also benefit your eye health. Opt for water-packed tuna instead of oil-packed tuna to reduce calories and total fat. 
• Eggs, and in particular the yolks, contain vitamin B12, vitamin D and choline, which work to help keep our bodies energized. The vitamin D in eggs can also support stronger bones, while the choline may promote muscle control. Eggs are also a good source of protein.
• Tomatoes are a good source of carotenoids, including lycopene, phytoene and phytofluene, which may reduce the risk of specific types of cancers. Tomatoes can also benefit skin health, thanks to their high water content. 
• Olives provide vitamin E, an antioxidant that supports immune and skin health. They also contain polyphenols, which may protect against heart disease and cancer.