Slice the mushrooms and onions into bite-sized pieces.
Rinse the tofu noodles in cold water.
Heat olive oil in a pan, then sauté the mushrooms and onions.
When the mushrooms and onions are cooked, pour in the soy milk and bring to a boil.
Add the tofu noodles and season with salt and pepper.
Simmer until thickened, then serve.