1，Prepare all the ingredients: bacon (cut into slices), mushrooms (cut into slices), onion (cut into small dice).
2, Cook pasta first. I would like to cut down 2 mins of the cooking time shown in the instruction on the package. Drain the pasta and put aside.
3, Heat a pan. Add in oil. Stir fry onions till transparent.
4, Add in bacon, and sear them a bit. Then add in mushroom slices. Stir fry for a minute or 2. Season with salt and black pepper.
5, Spread in 1 tbsp flour. Quickly stir fry evenly. Flour will help to thicken sauce.
6, Pour in 3/4 cup milk (you can use less or more milk depending on how thick you want the sauce to be). Bring the sauce to boil, and turn down the heat. Add mixed herbs, let it simmer for 3-5 minutes.
7, Put nearly-cooked pasta in, cook for another 2 minutes. Sprinkle cheese to add more flavor.
8, Serve with a little bit more black pepper.