STEP 3

Spoon a third of the tomato sauce on the base of a lasagne dish. Top with a third of the lasagne sheets. Then top with a third sauce, a third lasagne, the last of the tomato sauce and finally the last sheets of lasagne. Pour over the white sauce and scatter with the cheese and an extra grating of nutmeg. Chill. If eating straight away, bake at 190C/170C fan/gas 5 for 40 mins until golden and bubbling. Scatter with basil, if you like, and serve with a salad and garlic bread.