penne gratin Beef

ingredients:
- 200 g penne
- 1 thick slices of beef
- 30 cl of milk
- 30 g butter
- 30 g flour
- 40 g feta cheese
- nutmeg
- salt
- pepper
method:
In a saucepan, melt the butter and add the flour immediately. Mix well with a whisk.
Stir while incorporating the milk gradually while stirring continuously. Season with salt, pepper and nutmeg and cook for 5 minutes over low heat until thickened.
In a saucepan of boiling salted water, cook pasta for the time indicated and then drain.
  cut the beef into thin strips.
Divide the pasta into two gratin dishes (individual), add the beef, cover with bechamel sauce and sprinkle with grated cheese sheep.
Bake for 5-6 minutes at 180 ° C.

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