You can have the bonds pass OUTSIDE of your trust, directly to a named beneficiary simply by naming that person as the beneficiary on your TreasuryDirect.gov account.
Are these old paper bonds? In that case, you’ll have to open an account at TreasuryDirect.gov (read this).
Then you’ll send the bonds in by registered mail and have the POD name changed on the bond. There will be no tax consequence, but the bond will live in electronic form in the future. The don’t re-issue paper bonds.