Peel the broad beans and cook in boiling salted water for about 5 minutes. Drain the beans, quench them and let them drip off. Press the beans out of their skins if necessary.
Rinse the fillets, dab dry, season with pepper and wrap 1 slice of bacon around each fillet. Fry 2 slices of bacon in a pan without fat until crispy. Take them out and let them drip off on kitchen paper. Heat oil in the bacon fat. Fry the fillets for about 7 minutes on each side. Wash the sage and pluck the leaves from the stems. About 2 minutes before the end of the frying time, add half the sage to the frying fat. Cut the rest of the sage very finely.
For the sauce, heat butter in a saucepan. Lightly sauté the flour in it. Stir in milk and cream. Bring to the boil and simmer for about 2 minutes. Crumble cheese into it and melt while stirring. Season to taste with salt, pepper, nutmeg and the remaining sage. Heat the beans in the sauce. Crumble crispy bacon on top. Baguette tastes good with it.