Melt the butter and chocolate in a pot over low heat. Make sure both are melted before moving on.
Add the salt.
Add the egg, mix.
Add the pure vanilla extract, mix
Remove from heat.
Add the flour, mix until a dough forms.
Form into desired cookies and place on cookie sheet.
Bake at 350 degrees for 7-10 minutes.
Remove from oven and let them cool completely.
Coat each cookie with confectionery sugar.
Store in a cool, dry place.
Notes
In the Gates Household we usually double the ingredients to make enough for cookie plates and guest during the holiday. Betsy's also claims a nice helping of these for herself.