Food processing assemblies for rotating two processing tools inside a container at two different speeds and/or directions and methods for using such a processing assembly are disclosed. The two processing tools are vertically spaced along the longitudinal axis of the processing assembly. A motor drives the first processing tool and a transmission system, and the transmission system drives the second processing tool. The transmission system outputs a rotation speed and/or direction is different from that of the motor to drive the second processing tool. The transmission system may be located between the two processing tools within the food-containing volume of the container.