Combine apple chunks, cinnamon sticks, and whiskey in a 32 oz. Ball jar. Secure the lid on jar and place in cool, dark place for 3–6 days.
Use a metal sieve to strain 4 oz. of the whiskey into a cocktail shaker filled with ice. Add juice from one lemon, SteviaClear® Sweet Drops™, and SweetLeaf® Sugar-Free Maple Syrup to shaker. Shake until ingredients are combined and cold.
Strain into a rocks glass filled with fresh ice. Garnish with optional cinnamon sticks and apple slices.