Step 1

Heat the grill to its highest setting. In a flameproof casserole dish or metal frying pan, melt the butter and fry the garlic for 2 mins. Add the spinach and cook until it wilts, about 2 mins. Pour in the milk and beer and bring to a gentle bubble. Add the macaroni and stir intermittently for around 20 mins until the pasta is cooked and covered in sauce.

Step 2

Stir in the cheddar and half the mozzarella. When it starts to melt, sprinkle the remaining mozzarella on top and put it in the oven for around 7-10 mins or until browned on top and sensational underneath.