Preheat oven to 350 degrees F. Line baking sheets with parchment paper or silpat mat.
In a large mixing bowl, whisk together the flour, cinnamon, soda and salt; set aside.
In a large mixing bowl, using an electric mixer, beat the butter until smooth. Add the brown sugar, granulated sugar, egg, milk, and vanilla. Beat until well combined.
Beat in the flour mixture, adding it in 3 portions. Add the oatmeal and beat just until combined.
Set 1 Tablespoon of the orange zest aside if desired to use as garnish. May just add all of the zest at this time. Stir in the orange zest, cranberries, and pecans. Combine all ingredients well.
Drop cookie dough onto baking sheets with a small scoop or tablespoon.
Bake about 12 minutes or until cookies are light golden brown. Remove from the oven and allow to set on baking sheets about 5 minutes. Transfer to a wire cooling rack.
Place white chocolate discs in a microwave safe dish and heat 30 seconds. Stir, and continue to heat at 15 second intervals until it is melted.
Drizzle melted chocolate over the cookies. Garnish with reserved orange zest.