Put everything except the stock in a small pan with a small pinch of salt, and a good grind of black pepper.
Add enough stock to just cover the pasta: how much will depend on how big the pan is. Bring to a gentle simmer. Cook for 8-12 minutes, stirring the pasta occasionally to coat in the sauce.
Simmer until the pasta is tender and the liquid reduced to a sauce. Serve with more basil if you like.