To provide a butter case which integrally keeps butter and stores a device mounted on the cover back face of the case for slicing commercially available butter evenly.

This relates to the butter case which integrally keeps butter and stores the device for slicing commercially available butter evenly. The device for slicing the butter in an even size is made of a thin blade. Two elastic protrusions arranged in parallel are formed at several spots on the back face of the cover of the case for storing the device when it is not used by inserting and fitting the edge of the device between the two protrusions utilizing elasticity.