Step 1

Preheat oven to 350ºF and butter a 9x13 baking dish.

Step 2

Melt butter in a large saucepan over medium heat. Add milk and stir to combine. Once combined, slowly add flour, whisking to incorporate.

Step 3

Add mustard powder, cayenne (if using), salt, pepper, and Beecher's Flagship Cheese. Mix and stir well to melt cheese entirely and create a smooth sauce.

Step 4

Turn off heat and stir in noodles. Transfer to the greased baking dish.

Step 5

Top with the crushed potato chips and bake in preheated oven for 15-20 minutes. Serve warm and enjoy.