• Preheat the oven to 350 degrees.

Apple Topping

• Combine melted butter, brown sugar, and cinnamon into a medium bowl and whisk until the brown sugar is slightly dissolved. Spray the bundt pan liberally with nonstick cooking spray and pour mixture into the bottom of the pan.
• Add sliced apples to the top of the butter and sugar mixture in the bottom of the pan.

Cake Batter

• Combine cake mix, eggs, apple cider and apple sauce in a large bowl and mix according to package directions. Pour batter into the prepared pan and on top of the apple topping. Be sure to spread into an even layer.
• Bake in a 350° oven for 30-35 minutes or until a toothpick inserted into the center of the cake comes out clean. Remove from the oven and place onto a cooling rack for 10 minutes. Then invert your Apple Upside Down Bundt Cake onto a cake plate and cool completely. If apples stick to the bottom of the pan just use your fingers to remove them and place them onto the cake.
• Store your Apple Upside Down Bundt Cake in the refrigerator for up to 4 days.