1. Add pasta to a pot of salted boiling water, and follow packaged instructions.
2. In a large skillet make a roux, ratio is one to one. Add butter and flour and cook over medium heat, stirring constantly.
3. Gradually stir in the vegetable or chicken stock and continue stirring.
4. Now gradually add the cheese.
5. Season the cheese sauce with black pepper and pine nuts.
6. Drain and add the pasta to the sauce and top with parmesan cheese.