“You can never leave me again,” co-host Meghan McCain told Goldberg.
“I didn’t know what to expect when I hit the block today,” Williams told her studio audience.
The talk show host thanked her staff for “tirelessly holding it down.”
Television personality’s return was originally scheduled for Jan. 14.
The new mom left the show after Season 10 wrapped.
Her return follows departures of Maria Menounos and Catt Sadler.