1. In a pot of boiling salted water, cook the asparagus until al dente. Drain and cut the stems into sections, reserving the tips.

2. In boiling salted water, cook the pasta for 8 minutes. Drain and set aside.

3. In a pan, heat the olive oil. Add the onion and cook for 2 minutes. Add the asparagus sections. Pour in the cream and reduce by one-third over medium heat. Add the parmesan and pepper.

4. Add the asparagus tips and mix gently.
5. Add the cooked pasta. Mix well and serve immediately.