Serves 6
Preheat oven to 375°F. Prepare the fruit: If using apples, core and peel a 1" strip around the center of the apple. If using peaches or nectarines, cut in half and remove the pit. If using pears, cut in half lengthwise and remove the seeds.
Place fruit in a baking dish. Combine raisins, nuts, vanilla, and cinnamon in a blender or food processor with just enough fruit juice to facilitate blending to a coarse texture. Stuff mixture in the center of the apple or in the pit/seed area of the other fruit.
Pour apple juice into the baking dish to a depth of 1/2". Cover with foil and bake at 375°F. for 30 minutes or until just tender. Serve plain or with a dollop of yogurt or other favorite topping.