A cooking apparatus, a cooking apparatus controlling system, and a method of controlling a cooking apparatus are provided. The cooking apparatus controlling system includes a first cooking apparatus having a user interface configured to receive a user command from a user and a second cooking apparatus separated from the first cooking apparatus and configured to receive the user command input to the first cooking apparatus and operate according to the user command. The user interface receives one or more of a user command related to the first cooking apparatus and a user command related to the second cooking apparatus. The first cooking apparatus includes a first communicator. The second cooking apparatus includes a second communicator configured to communicate with the first communicator.
