spring onion, chopped
small lemon, juice of
- In a large bowl, mix together tuna, ricotta cheese, spring onion, mayonnaise, lemon juice and season with pepper and salt.
- Cut the hamburger buns in half, separating top from bottom. Scoop out some of the bread from inside the buns (top and bottom) to make room for the tuna mixture.
- Fill the buns with the tuna mixture and place both halves back together. Wrap the bun in tin foil and place in a moderate oven (180 degrees Celsius) for 15-20 minutes.
- To serve, cut the buns in half from the top.