Bananas, after peeling, are cut in half lengthwise, sprinkled with a little pepper and salt to taste and sprinkled with a few drops of juice of a lemon. Heat fresh butter in a shallow frying pan, fry the bananas in it, first on one side, then on the other, until they turn yellow, remove them, let them drain, pour the roux over them and apply it while it is still hot.
Roux:
Make a light roux with butter, flour and milk, salt and pepper it, add a few drops of soup seasoning and grated Parmesan cheese and pour it over the fried bananas.