Grease a popover tin (you can use a 12-cup muffin pan, too)
In a large bowl, whisk flour and salt.
In a separate bowl, whisk eggs, milk, and melted butter. Pour the egg mixture into the flour and gently fold the batter together until just combined. Do not over mix. It’s ok if a few small lumps remain.
Fill popover tin cups a little more than half way full.
Bake at 450 degrees for 15 minutes, then reduce oven temperature to 350 degrees. Continue to bake for 20 minutes more, until popovers are browned and crispy.
Remove from oven and slide popovers on a plate or cooling rack. Make a small slice with a sharp knife in each roll to allow steam to escape.