Directions

1. In a large pot of boiling salted water, cook pasta according to package instructions; drain well.
2. Melt butter in a saucepan over medium heat. Whisk in flour until lightly browned, about 1 minute. Gradually whisk in milk, and cook, whisking constantly, until incorporated, about 1-2 minutes. Stir in heavy cream and garlic powder until slightly thickened, about 1 minute.
3. Stir in cheeses until melted, about 1-2 minutes. If the mixture is too thick, add more milk as needed; season with salt and pepper, to taste.
4. Stir in pasta and gently toss to combine.
5. Serve immediately, garnished with parsley, if desired.