1. Bring a large pot of water to a boil and add salt. Pour in the pasta and cook according to instructions on the box until al dente.
2. Preheat your broiler to 500F.
3. In a saucepan add Huancaina sauce with the cream and heat gently.
4. Drain the pasta and add it to the warm Huancaina sauce. Mix well and add into a square casserole dish.
5. Sprinkle over the cheese and drizzle with olive oil. Pop-under the broiler for 8 minutes until the top is golden brown and bubbling.