Stovetop Directions: Bring a large pot of salted water to a boil, then add pasta and cook until al dente. Drain Pasta, then return to pot. Stir in butter, cream cheese, paprika, garlic powder, and cayenne (skip salt for now). Then, mix in milk, cheddar, and Monterey Jack cheese until smooth. (Add more milk, if needed.) Season to taste with salt and pepper.