Spread mustard sauce evenly on one slice of bread.

Lightly fry the sandwich ham in a pan and place it on the mustard-coated bread.

Place one slice of cheese on top of the ham.

Spread strawberry jam evenly on another slice of bread.

Stack the jam-coated bread on top of the ham and cheese layer, then add another slice of bread to complete the sandwich.

Beat 3 eggs in a bowl and dip the sandwich into the egg mixture, coating all sides evenly.

Preheat a frying pan, add a small amount of olive oil, and cook the sandwich on all sides until golden brown.

Let the sandwich cool slightly, then cut it into four equal pieces.