Preheat oven to 350 degrees F.
Grease a bundt pan (or a 9x13 cake pan).
In a large bowl, add the flour, both sugars, baking powder, baking soda, salt, cinnamon, nutmeg, ginger, and allspice. Whisk together.
Add in apple cider, applesauce, apple cider vinegar, and vanilla. Use a spatula to fold together, just until combined. Do not overmix.
Pour into prepared pan. Bake for 35-45 minutes or until toothpick comes out clean.
Remove from oven and let sit for 15-20 minutes to cool then invert onto a cooling rack. Let cake cool completely
When completely cooled, melt the butter in a small bowl. In a separate bowl, mix all the remaining topping ingredients together.
Brush on the melted butter and then sprinkle on the cinnamon sugar topping.