Cook the spaghetti. Carbonara No Cream Ingredients. Turn the heat under the skillet to medium. Using tongs, gently lift and turn the pasta, egg mixture, You’ll only need 7 ingredients plus pasta water (which helps create the sauce). Immediately pour the egg mixture over the hot pasta. Remove from the heat. Pecorino Romano – Can sub parmesan if that’s what you have. What you’ll need to make Spaghetti Carbonara. Meanwhile, melt the butter in a small pan, add the garlic and gently sizzle for 1 min. I’ve tried to keep this as traditional as possible, whilst making realistic subs that you’ll get at the supermarket.