Why settle for a regular old Moscow Mule when you can kick it up a notch by turning it into an Apple Pie Moscow Mule? Fill two copper mugs with crushed ice. In a cocktail shaker, combine the apple cider and rum. Shake to combine. Pour half of the apple cider mixture into each mug. Top each mug with ginger beer until full. Garnish with cinnamon sticks and apple slices. Cheers!