I am an internal auditor for a community bank with about 20 branches. I am auditing the Cash Vault which performs a monthly cash reconciliation for all of the branches. The reconciliation in place is confusing and doesn't explain any variances. Does anyone have an example of a solid Vault reconciliation template that I could adapt for my bank?

First of all, your cash vault only gets reconciled once a month?
To me it is pretty simple you are reconciling actual cash in each drawer to your teller system and then to the general ledger. Like any other reconciliation, the explanation of the outages is up to management desire and/or a recommendation from you.