01 -
Sauté onion and garlic in butter.
02 -
Add flour to make roux, cook 2 minutes.
03 -
Gradually add broth and milk, stirring until thickened.
04 -
Season gravy with salt and pepper.
05 -
Add beef, simmer until heated.
06 -
Toast buttered buns until golden.
07 -
Layer beef and cheese on buns.
08 -
Add optional toppings and serve hot.