Minn. Stat. § 386.39: INSTRUMENTS NOT PROPERLY EXECUTED.

Except where otherwise expressly provided by law, no county recorder shall record any conveyance, mortgage, or other instrument by which any interest in real estate may be in any way affected, unless the same is duly signed, executed and acknowledged according to law; any such officer offending herein shall be guilty of a misdemeanor and liable in damages to the party injured in a civil action.