In a medium saucepan, heat the cheese, cream, olive oil, broth, salt and pepper until the cheese is melted and the sauce is smooth.
Meanwhile, bring a large pot of salted water to a boil. Add the spaghetti and cook according to package instructions. Drain the pasta, reserving 1 cup of pasta water, return to the pot.
Toss the pasta with the sauce, adding reserved pasta water as necessary to coat the noodles.
Divide the pasta between plates and garnish with parmesan and freshly ground black pepper.