Bring a large pot of salted water to a boil and cook your pasta to package directions. Drain and set aside.
In a pot over medium heat, add butter. Once melted, add flour and cook for one minute. Next, slowly add your milk. Once all of your milk is added, season with mustard powder, nutmeg, salt & pepper.
Next, gradually add your cheese. Then add your cooked pasta and mix until combined.
Serve in a bowl with more fresh black pepper and enjoy!
