Preheat oven to 350°F. Line 2 large baking sheets with parchment paper and set aside.
In the bowl of a food processor with the dough blade, cream the butter and both sugars until fluffy, about 1 minute. Beat in the egg, vanilla extract, salt, cinnamon and nutmeg and mix to combine. Add the flour and baking soda and mix again
Remove batter into a large bowl and fold in fresh cranberries, white chocolate chips and oatmeal.
Scoop dough into 1-inch balls, rolling between your hands to make them perfectly circle. Place on prepared baking sheets, leaving 1.5 inches between each cookie.
Bake for 15 minutes. Cookies will look underdone and still pale, but this is what you want! Allow to cool on baking sheets for 10 minutes before transferring to wire racks to cool completely.