Preheat oven to 350 degrees. Grease a 10-cup bundt pan with non-stick spray. Set aside.
Mix flour, baking powder, baking soda, spices, and salt in a medium bowl until combined. Set aside. In a small bowl, mix vanilla, apple cider, and applesauce together. Set aside.
Add butter and sugar to bowl of a stand mixer. Beat on medium until whipped, about 3 minutes. Add eggs, one at a time, until smooth. Add 1/3 of the flour mixture to the butter mixture and mix until smooth. Add half of the cider mixture to the mixture and mix until smooth. Repeat until you end with the last 1/3 of the flour mixture. Stir together with a spatula to ensure all the butter, flour, and cider is all combined.
Pour batter into greased pan and smooth top. Bake in preheated oven until center is cooked-through, about 45 minutes. Remove from oven and let cool for 10 minutes.
Remove cake from pan and place onto serving plate. Mix cinnamon and sugar together for the topping. Brush cake with melted butter and sprinkle with cinnamon sugar mixture. Let cool completely before slicing and serving.