Cook the pasta according to packet instructions in a pan of salted boiling water, then drain.
Meanwhile, heat the oil in a frying pan, add the garlic and red onion and fry for 3-4 minutes or until the onion has softened.
Add the salmon cubes and double cream and continue to cook over a gentle heat for 5 minutes, or until the salmon has cooked through.
Stir in the drained pasta and season with salt and pepper. Sprinkle over the parsley and serve.