01 -
In a large pot, boil the pasta per the package instructions. Drain well.
02 -
Melt 1/4 cup butter in a medium saucepan over medium heat. Add 1/4 cup flour and whisk continually for 1 minute. Slowly add 1 1/4 cups heavy cream and 1 3/4 cups milk, while whisking continuously. Whisk an additional 3-5 minutes, or until slightly thickened.
03 -
Reduce heat to low and add shredded cheese, while stirring. Add 1 teaspoon salt, 1/2 teaspoon pepper, 1/2 teaspoon ground mustard, and hot sauce (if desired). Whisk until smooth. Remove from heat.
04 -
Add cooked pasta into the sauce and serve.