Buns
Take a brioche recipe, shape it into balls and proof as desired. I like mine *just* pillowy, with a bit of structure still but not too dense - the recipe I use is a high yeast dough (almost half percent total yield) and I proof my 84g buns for about an hour. I like a double egg wash and sesame.
Also I'd do without the egg wash on the bun. Anyway, ask 10,000 chefs how to do something and you'll get 10,000 different answers.