Use a 6-quart slow cooker. Pour the water into your slow cooker. Place the cored apples into the cooker, standing upright. Unwrap the caramel candies and push 2 candies into each apple. Top each apple with 1 teaspoon of brown sugar. Push a small square of butter into the apples, and then add a tiny pinch of cinnamon to each.

Cover and cook on low for 6-7 hours or on high for about 4 hours. The apples are finished when the skin has begun to pucker and they are tender enough to cut with a spoon.