Preheat oven to 350℉
In a mixing bowl, combine the cake mix, apple cider, apple sauce, eggs, melted butter, allspice, and vanilla extract using an electric mixer
Prepare a bundt cake pan with non-stick spray
Pour the cake batter into the bundt pan
Bake for 40 minutes (or until a toothpick comes out clean)
Allow the cake to cool completely for at least 30 minutes
Remove the cake from the pan and place it on a wire rack. A butter knife can help the cake pull away from the cake pan if needed.
Place the wire rack over a baking sheet
In a mixing bowl, combine granulated sugar and ground cinnamon
Melt ¼ cup of butter and apply it generously over the cake using a silicone basting brush
Sprinkle and press the cinnamon sugar topping over the entire cake. The excess will fall onto the baking sheet below the wire rack.