Preheat oven to 350 degrees. In a medium bowl, combine flour, baking soda and salt. Set aside.

In a large mixing bowl, beat butter and both sugars together until light and fluffy. Beat in egg and vanilla until well mixed. Gradually add in the flour mixture until combined. Stir in orange zest and white chocolate chips.

Drop by heaping tablespoonfuls onto a large cookie sheet. Bake for 10-11 minutes.