Get ready to treat yourself to the ultimate tuna melt experience! This open-faced sandwich is a masterpiece of flavours and textures, featuring chewy sourdough bread, tender chunks of tuna, sharp onions, creamy mayo, zingy wholegrain mustard, and the irresistible ooey-gooey Cheddar cheese grilled to golden perfection. Trust me, this is the BEST tuna melt you'll ever make!
Ingredients
- 4 slices sourdough toasted, 35-40 g / 2 oz. each
- 180 g canned tuna in brine or 6 oz. (this is drained weight)
- 1/4 small white onion or red, finely diced
- 1 heaped teaspoon of wholegrain mustard
- 2.5 tablespoons mayonnaise
- 1 cup grated cheese e.g. Cheddar, Tasty etc
- A few pinches of sea salt and ground black pepper
- To serve: gherkins and sliced cucumber
Instructions
- Pre-toast the bread on the lowest setting in a toaster, then arrange the pieces on a piece of parchment paper on a flat baking tray.
- Preheat the oven to Grill setting while you're making the toppings.
- Combine strained tuna with finely diced onions, mayonnaise and mustard and mash well with a fork.
- Grate the cheese and set aside.
- Spread a few tablespoons of the tuna mix on each piece of toast. Top generously with grated cheese.
- Pop the tray under a hot grill (medium-high) but make sure it's not too close to the grill or the edges of the toast will burn before the cheese melts properly. Grill until the cheese has melted and formed a golden crust, it should only take a few minutes.
- Remove and cool slightly before serving. Sprinkle with a few pinches of ground black pepper and sea salt.
Video
Notes
Nutrition Label: If serving as a main dinner meal, you may need 2 slices per person. For lunch, 1 slice might be sufficient, especially if served with a side salad or soup.
Storing Leftovers/Making Ahead: The mixture for tuna melts is super easy to store and use later. Transfer it to an airtight container and store it in the refrigerator for up to 4 days. Your cooked tuna melt will stay good for a day or two either wrapped in plastic wrap or stored in an airtight container. The bread may get soggy, though.
Originally posted February 23, 2023 | Updated on March 7, 2024
Nutrition
Serving: 1 slice | Calories: 391kcal | Carbohydrates: 34g | Protein: 22g | Fat: 18g | Saturated Fat: 7g | Polyunsaturated Fat: 5g | Monounsaturated Fat: 4g | Trans Fat: 0.02g | Cholesterol: 48mg | Sodium: 724mg | Potassium: 184mg | Fiber: 1g | Sugar: 3g | Vitamin A: 314IU | Vitamin C: 0.3mg | Calcium: 243mg | Iron: 3mg
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