Boil potatoes. Drain once the potato is cooked.
In a bowl, mash the potatoes with butter and eggs. Mix in flour and season with salt and pepper. Take a small portion and flatten.
Take a bit of bopis and a cube of cheese and place in the middle of the flattened potato mixture. Form into a ball.
Roll potato balls in flour, egg and breadcrumbs.
Fry for a few minutes, until golden. Turn constantly. Strain then serve