Spinach & artichoke casserole
Preheat the oven to 180°C/ 350°F/Gas mark 4.
In a heavy frying pan, sauté the mushrooms and onion in the oil until the onion is translucent.
Combine all the ingredients in a large casserole dish and mix well.
Cook in the oven, covered, for 30–40 minutes. Serve hot.