In a bowl add the canned tuna, finely diced red onion, sweetcorn, and mayonnaise then mix until all the ingredients are evenly combined
Drizzle olive oil onto a griddle pan and brush the oil over the pan
Add a flour tortilla and top with mozzarella cheese and the tuna mixture
Top with more cheese and finish with a flour tortilla on top
Brush the top of the tortilla with some oil
Allow the quesadilla to cook for 2-3 minutes on medium heat until the bottom side is lightly browned
Flip over and allow to cook for a further 2-3 minutes until lightly browned
Cut the quesadillas into slices and enjoy warm!
