This has been such a staple of ours for so long I can't believe I haven't posted it here yet!
In a large pan of salted water, cook the penne.
In a separate pan, fry some diced chicken and bacon pieces - I like to make both of them small bite size - until cooked. Stir in some cream and bring to the boil to thicken. Serve over the pasta.
So simple!
