Boil macaroni pasta according to package instructions and drain.
Heat butter in a pan and add all-purpose flour. Stir for 1 minute.
Slowly add milk while stirring continuously to avoid lumps.
Add grated cheese and mix until smooth and creamy.
Season with salt, black pepper, chili flakes, and oregano.
Add boiled macaroni and mix well until coated with cheese sauce.
Serve hot and enjoy the creamy cheesy pasta.