Finely chop the onion and garlic.
Thinly slice the button mushrooms.
Heat olive oil in a pan and sauté the garlic and onion.
Add the mushrooms and cook together.
Add parsley and konjac rice, mixing well while stir-frying.
Season with salt and pepper.
Pour in vegetable broth or water and simmer until cooked through.
Transfer the finished pareotto to a bowl and sprinkle with Parmesan cheese.