Parmesan grated on a fine grater, sliced bacon into pieces 1.5 cm wide, parsley - arbitrarily.
Red onion - thin quarters of rings.
Boiled pasta in salted water, poured, pouring the liquid into a glass (it will come in handy later). Stirred with a spoon of butter.
In a dry frying pan fried bacon on medium heat, the fat should be melted, and the pieces crunch. I put the bacon on a paper napkin.
In the bacon fat fry the onion, adding half a teaspoon of salt and a little pepper, cook about 5 minutes until the onions became soft.
In the pan with the onions, poured in the cream, cook for a further few minutes while stirring until the mixture thickens a little.
Added pasta, Parmesan, half bacon, further adjusted for salt and pepper. Then poured about 3/4 Cup of liquid, in which cooked pasta, it adds a tenderness. With the amount you have to decide for yourself, pasta should not be alone to swim in a pan, but do not look like a whole viscous mass.
The dish can be served immediately, sprinkled with the second half of bacon, Parmesan and parsley. And you can, I have put them in a container for baking, parsley sprinkle certainly not at this stage, and put in heated to 210 degrees oven for a few minutes to melted cheese.
Then it will look like this. And sprinkle parsley in each bowl to taste.