Preheat oven to 425° F. Line top sheet of doubled up baking sheets with parchment paper or line 8 tuna tins with muffin liners and spray inner sides with nonstick cooking spray.
In a food processor, place the flour and butter and pulse to break up butter. Add sugar, baking powder, salt and nutmeg or cloves and pulse to combine. Turn out dough into a large bowl. Make a well in the center and stir in cream, vanilla extract, butterscotch extract (if using) and egg. Stir to make a soft dough. Fold in butterscotch chips.
Scoop onto baking sheet or into prepared tins. Brush tops with egg white and add ground butterscotch chips. Bake until browned - 16-18 minutes. Dust with confectioners' sugar when cool.Makes 4 Source: