While the pasta is boiling begin making the cheese sauce. Add butter to a heavy bottom pot or dutch oven and melt over medium high heat. Once the butter has melted add in flour and whisk over medium high heat for about a minute to cook off the raw flour taste. Slowly stream in the milk while continuously whisking. Whisk until it is smooth with no lumps. Then bring the sauce to a low boil over medium high heat while whisking frequently so it does not scorch. This will take around 5 minutes. On...