Preheat oven to 450 degrees. Position rack on lower shelf.

Spray the popover pan or muffin tin generously with non-stick cooking spray. If using muffin tin spray area between cups too.

Place eggs in cup of hot water for 10 minutes before using.

In a large bowl, whisk eggs, milk, salt and granulated sugar. Whisk until there are no streaks of yolk left.

Add all the flour, and beat until frothy. There should be no large lumps.

Quickly stir in melted butter.

Pour batter into cups. Fill to 3/4 full.

Bake popovers for 15 minutes at 450 degrees, WITHOUT opening the oven door.

After 15 minutes turn the oven down to 350 degrees and continue to bake for 20 more minutes until golden brown.

Remove from oven. Stick the sharp tip of a knife into the top of the popover to release the steam and help prevent the popovers from getting soggy.

Brush each popover with some of the melted butter and roll carefully in the sugar mixture, coating well.

Serve immediately.