In a saucepan over medium heat, stir the flour, syrup, apple cider, egg, and applesauce.
Cook and stir until the first bubble forms. Reduce to low heat, add the vanilla and stir for 1 more minute.
Transfer to a bowl and take to the fridge for 3 hours.
When ready to serve, fill the bottom of glasses with granola. Pour the pudding into the glasses. Top with apple slices and rolled wafer cookies. Serve and enjoy.