Disclosed herein is a cooking apparatus capable of accurately perceiving whether a door is closed. Disclosed herein is also a cooking apparatus capable of preventing a latch assembly of a main body from being pressurized by another object outside the cooking apparatus in a state in which a door is opened. The cooking apparatus includes a latch assembly disposed in a main body and configured to confine a key member of a door, wherein the latch assembly includes: a body including an interference hole therein; a first lever rotatably coupled to the body; a second lever configured to be rotatable in a first direction due to pressurization of the key member; a stopper connected to the second lever and configured to restrict rotation of the first lever as the stopper is inserted into the interference hole; and a sensor configured to be selectively pressurized by the first lever and sense whether the door is opened and closed to prevent malfunction of the cooking apparatus.