This Pasta with Chicken Broth, Butter and Parmesan is pure comfort food! It is a bowl of wonderful, warming, healing amazingness. One spoonful and you know the world is going to start looking brighter. A whole bowl and you feel restored.
To ensure the 4 cups of broth/stock is enough to cook the pasta and leave you with some to spoon over, you need to cook this over a very low heat. This prevents some of the evaporation. If the mixture boils you will find you run out of stock.
If this does happen add some boiling water to your pasta, not too much as you will dilute the wonderful chicken flavour.
When you serve add as little or as much of the buttery stock as you like. It really is a personal preference :D