Wash the mushrooms and broccoli thoroughly and cut them into bite-sized pieces.
Finely chop the onion and garlic.
Heat olive oil in a pan and sauté the garlic and onion.
Add the mushrooms and broccoli and stir-fry together.
Pour in milk and fresh cream and bring to a boil.
Season with salt and pepper.
Simmer until the sauce thickens to the desired consistency, then it's ready.