Wash the apple, cut out the core. Cut apple into slices. Heat half the butter in a large pan. Fry 2 slices of toast in it until crispy, take them out. Heat the remaining butter in the pan, fry 2 more slices of toast until crispy, remove.
Cut the camembert into slices. Top toasts with camembert and apple slices. Place 1 tablespoon cranberries on each slice. Sprinkle with pepper