Cook pasta in salted water for approximately 7-minutes (a minute or two less than the package directions).

Drain the pasta and rinse in cold water. Optional drizzle a little olive oil over it to prevent sticking.

Melt the butter in a large pot on the stove over medium heat.

Whisk in the flour until thick and creamy.

Gradually add the milk, followed by the heavy whipping cream, whisking constantly.

Add the garlic powder, salt, and pepper, stirring it through and simmer for 5-minutes.

Add the cheese, one handful at a time, stirring it through until it's melted, then repeat until all of the cheese has been added.

Once the cheese is completely melted and cheese sauce is smooth you can add the pasta back in. Stir it through and leave to cook for a couple of minutes before serving.