1. Preheat the oven to 400°F 2. Use a large saucepan to cook the macaroni in lightly salted boiling water according to pack instructions. Drain carefully in a colander. 3. Melt the butter in another saucepan and stir in the flour and mustard to make a paste. Cook over a low heat for 1 minute, stirring all the time. 4. Slowly whisk in the milk a little at a time until smooth, then simmer the sauce until thickened. 5. Stir two-thirds of the cheese into the sauce, then mix in the macaroni and season to taste. 6. Transfer the macaroni cheese to a baking dish, scraping out all the sauce with a wooden spoon, then level the top flat. 7. Sprinkle over the crushed chips. Cover with the remaining cheese and cook in the oven for 20 minutes until golden and bubbling. ---------------------------------------------------------------------------
Nutrition
Ingredients
