Preheat oven to 450°.
Place vanilla wafers in a food processor, and pulse 10 times or until coarse crumbs measure about 2 tablespoons. Combine wafer crumbs and nuts in a shallow dish, stirring to combine.
With moist hands, shape Homemade Ricotta Cheese into 24 (1-inch) balls; roll balls in crumb mixture, coating on all sides. Place coated balls on a baking sheet; chill.
Place grapes on a jelly-roll pan, and sprinkle with sugar. Bake at 450° for 17 minutes or until grapes begin to burst, stirring occasionally.
Place 3 ricotta balls on each of 8 dessert plates; top each serving with about 1/4 cup grapes. Drizzle 1 tablespoon maple syrup over each serving.