Take tuna melt to the next level! With rich tuna flavour, intense cheesiness from Parmesan and Cheddar, egg, plus piquancy from garlic, dill, pickle, mustard, and lemon, this is the ultimate tuna melt.
Note: this recipe is for open-faced tuna melt heated under a grill. For making tuna melt sandwiches in a pan, griddle, or sandwich press, see Recipe Notes below.
The tuna mix is also good melted on top of a split open baked potato.
It's recommended that you read the accompanying blog post before starting the recipe.
Put the first 10 ingredients (i.e. from tuna to lemon zest) in a bowl and mix well with a fork.
Add the mayonnaise, the Parmesan, a small handful of the Cheddar cheese, and grind in some black pepper. Stir again to thoroughly combine.
Taste and add more seasoning if needed, including salt and a squeeze of lemon if liked.
Heat your grill to high and toast the bread on both sides.
Place the toast on a shallow baking tray (to catch any melting cheese).
Divide the tuna mixture between the slices of bread, making sure the bread is completely covered so it doesn't burn.
Sprinkle the remaining Cheddar over the slices, again completely covering them.
Put under the preheated grill and cook until the topping is hot and the cheese is melted, bubbling, and turning golden brown.
Serve straight away.
Unused tuna mixture can be stored for 1 day in an airtight container in the fridge.
To make Luxury Tuna Melt sandwich in a pan, on a griddle, or in a sandwich/panini press: