Slice the king oyster mushrooms and onion thinly.
Prepare the crab meat into suitable sizes.
Stir-fry the onion and king oyster mushrooms in a pan with olive oil.
Add the crab meat and stir-fry briefly.
Add milk, tomato sauce, and heavy cream; mix well and bring to a boil.
Add cooked pasta to the sauce and mix well.
Season with salt and pepper.
Serve the finished pasta on a plate and garnish with parsley.