Preheat oven to 400 degrees. Core apples (as many as you need). Peel apples around the top. Then leave a bit of skin just below the top and at the bottom. This will help hold the apple together. Lightly great a baking sheet with Pam. Place the apple(s) in the pan and fill with granola. Add a tablespoon of maple syrup and two tablespoons of cranberry juice to the center. Fill the bottom of the pan with 1/4 cranberry juice. Bake for one hour. Remove apples from the pan and place on a plate. Spoon the sauce for the pan over the apples and sprinkle with powdered sugar. This can be prepared a day ahead and Cortland apples resist browning and are great for baking.