Place granola, raisins, cinnamon and maple syrup in a small mixing bowl and combine well.
Scoop out the core from the top of each apple. Cut a small slice off the bottom so that it sits flat, but do not cut into the core opening.
Stuff each apple with 1/4 cup of the granola mixture and dot with 1/2 tablespoon butter. Place in a shallow baking dish and pour apple cider around the apples. Bake the apples, basting occasionally, for about 1 hour, or until fork-tender and caramelized.
Mix together yogurt and honey; drizzle over or serve with baked apples.