Window cranks in shallow casement windows are difficult to avoid when installing interior shutters. Occasionally the window is just deep enough that the shutter can still be mounted directly to the window jamb.
The crank handle can be removed to buy the necessary additional clearance, and it may then be temporarily replaced to open or close the window.
Another option would be to replace the crank handle with a butterfly handle, which is much shallower than the standard crank and maybe found at most home improvement stores.
If you find that the window crank unit is still an obstruction, you may need to mount the shutters on the outside of the window opening to the face of the trim (or directly to the wall if there is no existing trim) using a frame.