1
                                                                    EXHIBIT 23.1




                         CONSENT OF INDEPENDENT AUDITORS


We consent to the reference to our firm under the caption "Experts" and to the
use of our report related to Mutual Savings Bank dated March 7, 2000 and our
report related to First Northern Capital Corp. dated January 22, 1999 included
and incorporated by reference, respectively, in the Registration Statement (Form
S-4) of Bank Mutual Corporation for the registration of up to 8,996,198 shares
of its common stock.



                                                  /s/ Ernst & Young LLP



Milwaukee, Wisconsin
August 28, 2000






                                     1 of 1