Add onions to the sausage grease and cook through.
Add flour to onions and grease. Cook for a min.
Slowly whisk in the milk.
Add Salt and Pepper.
Cook on medium high until gravy is as thick as you want it.
Build the dish:
English muffin first.
Slice of Cheese.
Sausage Pattie.
Poached egg.
Cover with Gravy.