Preheat oven to 350 degrees. Lightly grease a muffin tin or line
with paper liners and set aside.
In a large bowl, whisk together flour, 1/2 cup sugar, baking
powder, nutmeg and salt. In a separate bowl whisk together the
egg, milk, melted butter, and vanilla until well combined. Add the
wet ingredients to the dry ingredients and mix with a rubber
spatula just until blended.
Fill each of the muffin cups 2/3 full with batter (I used about 1/4
cup of batter per muffin) and bake for 20 to 25 minutes, until
they are puffed and golden. In the meantime, combine sugar and
cinnamon in a shallow dish (such as a pie plate) and place the
melted butter in another shallow dish.
When the muffins are cool enough to handle, but are still hot, roll
them into the melted butter and then in the cinnamon-sugar.
Makes about 8 medium sized muffins.