Photo: Antonis Achilleos; Prop Styling: Christine Keely; Food Styling; Tina Bell Stamos
How to Make It
Melt butter in a medium saucepan over medium. Whisk in flour until combined. Whisk in milk, and cook, whisking constantly, until mixture comes to a boil, about 2 minutes
Remove from heat, and stir in cheese, mustard, salt, and pepper until smooth.