In a medium bowl, cream together the butter and sugar until light and fluffy. Beat in the eggs, one at a time, then stir in the vanilla, orange zest, and salt.
Combine the flour and baking powder; stir into the creamed mixture. Mix in the white chocolate chips. Drop by rounded tablespoonfuls onto ungreased cookie sheets.
Bake for 8 to 10 minutes in the preheated oven, until golden. Allow cookies to cool on baking sheet for 5 minutes before transferring to a wire rack to cool completely.
Interesting Facts
White chocolate chips are made from cocoa butter, sugar, and milk solids.
Orange zest can be used to add flavor to a variety of dishes.
Orange extract can be substituted for orange zest if desired.
These cookies can be stored in an airtight container for up to 5 days.