Melt 2 tablespoons of butter in a large (preferably cast-iron) skillet. Add onions and cook until soft and light brown. When onions are just about done, add garlic and cook for about 30 seconds, until fragrant. Remove onions and garlic from pan an set aside.
Slice cube steak, against the grain, into 1/2 inch strips.
Season well with house seasoning.
Melt 2 tablespoons butter over high heat (in same skillet).
Add meat in single layer; Cook one side until brown, then flip and cook until brown.
Add Worcestershire sauce, 2 tablespoons butter and cooked onions and garlic.
Stir to combine.
Remove from heat.
Butter halved rolls and toast in skillet.
Pile meat on roll and spoon sauce from pan over top.