Step 1: Heat that pan and put some chopped bacon in it. No need for butter or oil, bacon is greasy as hell.
Step 3: when cooked and brownish, add cream until you cover it.
Step 5: then add cheese slices until you think "damn, that’s too much cheese".
Step 7: let it melt and then add half or the whole cube of meat stock, depending on the quantity of sauce you made.
Step 9: just keep adding and tasting until it’s delicious and maybe a little bit salty. (when you mix it with the pasta, the flavour tones down)
Step 11: hh, and i forgot: don’t forget to heat cook your pasta before you start the sauce. Or you’ll end up eating the sauce with a spoon. I’ve done it.
Step 13: i usually start making the sauce when the water is boiling and i’ve put in the spaguettis. But don’t trust it, sometimes it just becomes soft. Too soft. Baby butt soft.