Plantain au Gratin

Ingredients

 * 4 ripe plantains
 * 4 tablespoons oil
 * a little bit of white sauce
 * 1 oz butter
 * 2 teaspoons flour
 * a large glass of milk
 * salt
 * pepper
 * 3 oz grated Swiss cheese

Directions

 * 1) Peel the plantains,cut them in two parts in lengthways ,then into slices.
 * 2) In the frying pan ,fry them in small quantities with oil.
 * 3) Prepare the white sauce with the butter and the flour well mixed, the milk, the salt and the pepper.
 * 4) Place in successive layers in a "gratin" dish the plantain and the white sauce ; finish with the white sauce.
 * 5) Powder with the grated Swiss cheese.