Step one: Bring a pot of water to a boil and cook noodles according to the package. Then, preheat your oven to 400 degrees.

Step two: In a large saucepan melt 6 tbsp of butter over medium heat. Once melted, slowly add in flour to make a paste.

Step three: Slowly whisk in your milk, mustard powder, garlic powder and salt & pepper.

Step four: Place 2 cups of water in a microwave safe bowl for about 2 minutes and whisk in 2/3 cup of Three Cheese Sauce Mix, then add to the saucepan along with Monterey Jack Cheese, shredded rotisserie chicken, and hot sauce (to your liking). 

Step five: At this time, your pasta should be cooked and you can add it to the pot and stir together. Once mixed together, pour the contents of your pot into a baking pan.

Step six: Melt 2 tbsp of butter. Add breadcrumbs to the butter and mix together. Add this mixture on top of the pasta.