On a plate or small dish, add a small amount of caramel sauce and rim your glasses in it. In a separate small plate or dish, mix the cinnamon and sugar and dip the rim in it so it sticks to the caramel
In a cocktail shaker, combine the apple cider, caramel vodka and ice. Shake vigorously
Pour the mixture into the rimmed martini glasses and garnish with a slice of fresh apple