Prepare the Ninja SLUSHi machine. Make sure all removable parts are clean and properly assembled according to the manufacturer's instructions. Place the machine on a flat, stable countertop.

Add the ingredients. Pour the chilled apple cider into the machine, followed by the caramel vodka and Crown Royal Apple. Close the cover securely. The mixture totals 6 cups, or 48 fluid ounces.

Select the preset. Turn on the Ninja SLUSHi and choose the Spiked Slush setting. Allow the mixture to freeze until it reaches a thick, slushy consistency. This usually takes around 15–60 minutes, depending on the ingredients and starting temperature.

Dispense the slush. Place a glass beneath the dispensing spout. Pull the handle slowly to fill each glass, then release it to stop the flow. Allow more freezing time if the mixture is too thin.

Add the toppings. Finish each serving with whipped cream and a drizzle of caramel sauce. Serve immediately while the slush is cold and refreshing. Serve only to adults of legal drinking age.