Automatic Swirlers are ideal for mixing together products like fillings and batter. Labor is reduced and product appearance and quality is improved when producing marbled or swirled cakes and sweet goods. The unit mounts to an indexing conveyor downstream of the second batter depositor and dives rotating fluted swirling blades into cake pans. The rotating blades oscillate around the pan to swirl the two flavors together. The rotation speed, depth of dive and swirling duration are adjustable to control appearance and depth of swirling. A catch pan shuttles under the blades when retracted, and each blade retracts into a special housing and spin at high speed to prevent build up of product.