In a bowl, combine the cheese, garlic and mayonnaise. Divide the chicken fillet into one large and one small piece and salt them to taste.
Spread the filling mixture over the large piece then place the small piece in the center and fold the edges of the larger piece over in half moons.
Dip in beaten egg to cover and then coat with the breadcrumbs evenly.
Heat oil in a large frying pan and use to fry the meat until lightly browned all sides.
Transfer to a baking dish (we used individual ones) and bake on a previously pre-heated oven at 180°C for 30 minutes or until completely cooked. Serve hot.