Preheat oven to 350° with rack in center of oven. Prepare a 9 or 10 cup Holiday Tree Bundt pan by spraying well with non-stick cooking spray.
In the bowl of a stand mixer, beat eggs until frothy. Add butter, yogurt, milk and vanilla and mix to combine. Add Spice Cake Mix and spices and beat for a minute or two, scraping down the bowl as needed, until combined. Pour batter into prepared pan.
Bake for 40 to 50 minutes (9-10 cup pan) in center of pre-heated oven until cake springs back when lightly touched on top or a toothpick comes out clean. Cool on a rack for at least 20 minutes (if too hot, cakes will stick to the sides of the pan more) before removing from the pan. Gently flip out of pan to finish cooling on rack.
When cool, sift powdered sugar over the top for a "snow" effect.