Wash the king oyster mushrooms thoroughly and remove any moisture.
Score the king oyster mushrooms with a knife.
Finely chop the green onions and garlic.
Add cooking oil to a pan and sauté the green onions and garlic to release their aroma.
Add the king oyster mushrooms and stir-fry.
Season with salt, pepper, and soy sauce.
When the mushrooms are golden brown and cooked through, transfer to a plate and serve.