Serves 4 Ingredients   3 tbsp butter 1 tbsp olive oil1 large onion, peeled, chopped 1kg mushrooms, wiped clean, quartered with stems left on, but dry end bits cut off; reserve 1/4 cup to sauté for the garnish 2 cloves garlic, minced ¼ tsp nutmeg 2 tbsp chopped parsley ½ tsp dried thyme or 4 [...]