I ♥️ carbonara. Haven’t found the perfect recipe yet though, especially if only making for one. So I search on web. This is my suggestion in the recipe. Now, it says it's for one, but I found it to be more like two regular servings.
Put on a pot of salter water to boil (use your biggest, non-pasta pot) and heat oil in medium frying pan
While water is heating, dice 3 cloves of garlic
Dice half of an onion
Grate lots of Parm
Diced pancetta (4 slices)
Sauté onion until soft and translucent
Once onion has softened add garlic, and sauté until fragrant
Remove onion/garlic mixture to plate - at this point your water should hopefully be up to boil
Add half a package of rigatoni to salted water and set timer (package said 12 minutes, I found 10 to be sufficient)
While pasta is cooking add pancetta to pan used for onion/garlic, and sauté until crisp
While pancetta is cooking, crack two egg yolks into a bowl (perhaps more/less depending on how big the eggs are), whisk gently with lots of black pepper, and add a large quantity of parmesan
Mix egg/cheese together - it will likely form a thick paste - and reserve a cup of pasta water
Once pancetta is cooked remove with slotted spoon reserving rendered fat in pan, and be sure to remove the pan from the heat, allowing the oil to cool slightly
Once pasta is cooked, remove half of the pasta to your pan with the oil using slotted spoon (this will allow a little bit of pasta water to fall into the pan), and drain the rest of pasta in colander and add to pan
Add onion/garlic/pancetta to the pan with pasta and stir to combine
Add egg/cheese paste to pan with pasta, along with a splash of pasta water to help thin out the mixture (start with a little bit, so it doesn't get too runny) and stir to combine, until smooth and silky (adding more pasta water or cheese if needed)
Grate extra black pepper
Serve with lots of parmesan sprinkled on top!!!