A cooking appliance for insertion into a cut-out in a work top includes a peripheral lateral wall having four wall sections. Each wall section has on the outer face thereof at least one resiliently deformable compression element. Two such cooking appliances disposed adjacently in the shared cut-out in the work top can be mounted by inserting a first one of the two cooking appliances into the cut-out. An intermediate wall is arranged on a free face of the first cooking appliance so that compression elements of the first cooking appliance adjoining the intermediate wall engage in a first group of recesses in the intermediate wall, and a second one of the two cooking appliances is inserted into the cut-out so that compression elements of the second cooking appliance adjoining the intermediate wall engage in a second group of recesses in the intermediate wall.