Step 1

Bring a large pot of salted water to a boil and cook pasta per package directions. Drain the pasta.

Step 2

While the pasta is cooking prepare the cheese sauce. In a medium saucepan melt the butter and then whisk in the flour, stirring until a paste forms and cook for about 1 minute. Slowly add in the milk while whisking continuously and cook for 4-5 minutes or until the sauce thickens.

Step 3

Reduce the heat to low and stir in dijon mustard and shredded cheeses, stirring until all the cheese has melted. Add salt and pepper to taste.

Step 4

Serve as desired.