These buns are excellent to make sub sandwiches or beef dips. The exterior is nice and soft due to applying butter to the hot buns and laying a tea towel over the top right after they come out of the oven. This is a very important step as it steams the buns a little, so don't leave it out.  I like to make the buns and then set out all the sub  fixings and everyone can then customize their own sandwich. 
