Tuna melt sandwiches are a beloved summer staple, but they can quickly spoil in warm weather when made with mayonnaise. However, a simple ingredient swap can keep them fresh and delicious. Cookbook author Erin Clarke recommends using plain Greek yoghurt instead of mayonnaise for a creamier, tangier, and less greasy tuna salad.
Why Greek Yoghurt Works Better
Greek yoghurt offers a thick, velvety texture that keeps the sandwich creamy without the oily or slimy quality of mayonnaise. It also adds a refreshing tang that complements the saltiness of tuna, making the sandwich lighter and more appealing in hot weather. Plus, it eliminates the risk of mayonnaise breaking down and turning watery or sour.
Ingredients for the Perfect Tuna Melt
- Two cans of tuna (around 140g each)
- 100g of Greek yoghurt
- 40g of cornichons or small dill pickles
- Three tablespoons of red onion
- Two teaspoons of lemon juice
- One teaspoon of grainy mustard
- One tablespoon of parsley or dill
- Six slices of bread
- Three slices of sharp cheddar cheese
- Three tablespoons of unsalted butter
- Salt and pepper to taste
Step-by-Step Method
- Drain the tuna thoroughly and place it in a bowl. Finely chop the pickles, red onion, and herbs.
- Add the Greek yoghurt, chopped pickles, red onion, lemon juice, mustard, herbs, salt, and pepper to the bowl.
- Using a fork, mash and stir the tuna mixture until well combined. Adjust seasoning if needed.
- Divide the tuna mixture evenly among three slices of bread, spreading it to the edges. Top each with a slice of cheese and another slice of bread.
- Butter the outside of each sandwich with about half a tablespoon of butter.
Cooking Instructions
On the hob: Place the sandwich butter-side down in a frying pan over medium-low heat. Cook for 2-3 minutes per side until golden and toasted.
In an air fryer: Secure the sandwich with cocktail sticks at opposite corners. Cook at 180°C for 9-12 minutes until bread is crisp and cheese melted.
In a toastie maker: Cook for about 5 minutes until bread is golden and cheese fully melted.
Let the tuna melt cool for a couple of minutes before serving. The result is a far more flavoursome and refreshing sandwich than the traditional version.
