You'll need:
Black sanding sugar, or a sugar/apple pie spice mix
1/2 small apple, chopped
1/2 lime, cut into wedges
1 oz maple syrup
1 oz apple cider
3 oz vodka
Thin round slice of apple for garnish
Optional club soda
Rub some lime juice on the rim of your martini glass, then dip in the sugar to coat the rim. Place the glass in the freezer to chill. Muddle the lime and half apple in the bottom of a cocktail shaker. Layer in the liquid ingredients and add ice. Shake to combine. Pour into your martini glass and add the apple slice and optional soda. Enjoy!