Fettuccine Alfredo
Butter, Parmesan and a ladle of starchy pasta water, tossed hard with hot fettuccine until they turn into a sauce. There is no cream in it — the sauce comes from the cheese emulsifying, and getting that right is the whole recipe.
At a glance
Ingredients and method are in the app
Kitchen Pantri holds the full ingredient list and step-by-step method for Fettuccine Alfredo, checks it against what is already in your pantry, and adds anything missing to your shopping list. The app is free to use; you set up a Pantri account when you first open it.