Cut the chicken breast into bite-sized pieces.
Slice the onion and mushrooms.
Heat olive oil in a pan and sauté the chicken breast.
When the chicken breast is cooked, add the onion and mushrooms and stir-fry together.
Add milk and heavy cream, and bring to a boil.
Season with salt and pepper.
Add the cooked pasta and toss with the sauce.
Transfer the finished pasta to a bowl.