A refrigerator appliance, as disclosed herein, may include a cabinet, a door, a dispensing assembly, an ice-making assembly, and an ice storage bin. The door may define a dispenser recess having a transverse opening extending vertically from a top recess end to a bottom recess end and laterally from a first recess side to a second recess side. The dispensing assembly may be positioned within the dispenser recess and define an ice delivery passage. The ice-making assembly may be attached to the cabinet. The ice storage bin may include a bin body defining a storage cavity. The bin body may be selectively mounted to the door within the dispenser recess to receive ice from the dispensing assembly. The bin body may extend vertically from the top recess end to the bottom recess end and laterally from the first recess side to the second recess side.