Ingredients

* 1½ pounds beef tenderloin, cut in thin pieces
* 2 cups spaghetti, broken in pieces
* 4 tablespoons butter
* 1 onion, peeled, chopped fine
* Seasonings to taste

Instructions

1. Boil the spaghetti in salted water for about 18 minutes.
2. Drain off water.
3. In a frying pan put the butter.
4. When butter is foaming, fry quickly the tenderloin and onion for about 4 minutes.
5. Add the spaghetti and the seasonings.
6. Mix well together and serve.