Mix the tuna, cottage cheese, grated cheddar, sweetcorn, spring onions, jalapeños, parsley, salt and pepper until creamy
Pile a generous layer of filling onto one slice of bread, top with grated cheddar and top with the second slice
Slice the sandwich in half diagonally before toasting to help keep the filling in place
Toast in a non-stick pan over medium-low heat for 3-4 minutes per side, pressing gently, until the bread is deeply golden and the cheese is melted
Alternatively, air fry at 180°C for 5-7 minutes, flipping halfway
Slice and serve hot. Refrigerate leftover filling for up to 3 days
