For the Pasta:
Cook fettuccine according to package directions.
For the Beef:
Season beef with salt and pepper then lightly pan-fry in butter just until brown; about one minute.
For the Sauce:
Melt butter in a saucepan.
Whisk in the flour making sure no lumps are formed.
Add in the bell pepper and cook for a minute.
Gradually add the beef broth then simmer until slightly thickened.
Add in the beef together with its juices and let simmer with the gravy sauce for five minutes over low heat.
Adjust seasoning according to taste.
Pour over roast beef mixture over pasta.
Serve hot topped with grated cheese and parsley.
Happy cooking, Foodies!