Boil salted water and cook elbow macaroni to al dente.Drain and set aside (don’t rinse to retain starch).
Make the Cheese Sauce
Melt butter in a saucepan, whisk in flour to make a roux (1 minute).Gradually add milk, whisking continuously. Simmer until thickened (5-7 minutes).Reduce heat and mix in cheese until smooth. Season with salt, pepper, and optional mustard powder.
Combine Pasta and Sauce
Fold drained pasta into the cheese sauce, ensuring every noodle is coated.
Prepare the Topping
Mix breadcrumbs with melted butter. Sprinkle over the mac and cheese.
Bake the Mac and Cheese
Transfer to a greased 9x13-inch baking dish. Bake at 350°F (175°C) for 20-25 minutes until golden and bubbly.Broil for 1-2 minutes for extra crispiness, if desired.
Let It Rest
Let the dish rest for 5 minutes before serving to allow the sauce to set.
Notes
This classic baked macaroni and cheese brings comfort in every bite, with its creamy cheese sauce and crispy top. Perfect for any meal, it’s an all-time favorite!