Cook a large cup of macaroni until tender in boiling milk and water. When done, drain and put a layer of the macaroni in the bottom of a pudding dish, and sprinkle over it a scant teaspoonful of granola. Add a second and third layer and sprinkle each with granola; then turn over the whole a custard sauce prepared by mixing together a pint of milk, the well beaten yolks of two eggs or one whole egg, and one-fourth of a teaspoonful of salt. Care should be taken to arrange the macaroni in layers loosely, so that the sauce will readily permeate the whole. Bake for a few minutes only, until the custard has well set, and serve.