01 -
Boil macaroni in salted water until al dente. Drain.
02 -
Heat butter, add flour and cook 1 minute. Whisk in milk until smooth.
03 -
Stir in cheeses and garlic powder until melted and creamy.
04 -
Mix in pasta and green chiles. Season with salt and pepper.
05 -
Top with extra cheese or herbs if desired.