The theme of the event, the last of President Barack Obama's two terms, is "Let's Celebrate." Menzel is scheduled to sing the national anthem before the event, in which invited children race to roll the specially designed colored keepsake eggs across the White House lawn.
More than 35,000 people are expected to attend. Tickets were distributed via a public lottery that is now closed.
The event will be streamed live at WhiteHouse.gov/live.
Other celebrity performers include Echosmith, Daya, Trevor Jackson and Silentó, plus the cast of Sesame Street and emcee Tommy McFly. Costumed characters will include Angry Birds The Powerpuff Girls, Captain Planet, Charlie Brown and Snoopy, Curious George and Sid the Science Kid, Darth Vader and the Stormtroopers, plus The Minions Bob, Stuart, and Kevin from Despicable Me