
Ingredients
Tuna Mix:
- 3 x 185g can MSC certified tuna in olive oil (drained) - look for the MSC blue fish tick label
- 6 tbsp mayo (Kewpie or Best Foods)
- 3 tsp Sriracha
- 3 tsp Dijon mustard
- 3 tbsp red onion (finely chopped)
- 3 tbsp chives
- 3 tbsp flat-leaf parsley
- 6 tbsp chopped pepperoncini or pickled jalapeños
- Salt + cracked black pepper to taste
The Melt:
- 12 slices sourdough or brioche, lightly toasted
- 3 large tomatoes, sliced & salted
- 3 cups grated aged cheddar + mozzarella
- Butter for toasting
When shopping for sustainable seafood, look for the MSC blue fish tick label to be sure.
Method
- Mix all tuna ingredients until creamy with texture.
- Butter the outside of each bread slice.
- Inside: tuna mix > tomato slices > grated cheese.
- Toast in a skillet on medium heat until golden and melty on both sides.
- Slice in half, serve hot, let the cheese pull do its thing.

Fraser and I teamed up with the legends at the Marine Stewardship Council to cook something that hits hard after a big workout. Because when we need a spicy, cheesy, high-protein boost, this tuna melt is our go-to 🙌🏽
Golden, gooey and packed with flavour, these spicy tuna melt toasties are a crave-worthy twist on a classic. MSC certified tuna is mixed with creamy mayo, tangy Dijon, a kick of Sriracha, and crunchy pepperoncini, then layered with juicy tomatoes and a generous handful of melted aged cheddar and mozzarella. Sandwiched between buttery toasted sourdough or brioche, it's comfort food with a bold, sustainable edge.
Sustainable Seafood Guide
Seafood with the MSC blue fish tick label comes from a well managed and sustainable fishery. Find out where to buy, what to look for and the questions to ask.
