VanderWaal told People that she'd like to give some of the $1 million to charity, probably a music charity.
While her intentions prove VanderWaal is wise beyond her years, she's still only 12-years-old.
"But I want to go on Treehouse Masters and I want to get a treehouse," she adorably added.
VanderWaal will also be headlining her own show at Planet Hollywood in Las Vegas from October 27-29.
"The most amazing thing about Grace is that you haven't heard anybody who sounds like her," AGT judge Howie Mandel, who had pushed his "Golden Buzzer" for her during the initial round, told the magazine.
"You haven't heard any lyrics from somebody that is like her, and we've been saying to her, you are the most unique, brightest star to come out of one of these shows."
AGT judge Simon Cowell, who compared VanderWaal to Taylor Swift this season -- which VanderWaal thinks is "truly amazing" -- admitted the young star's victory brought him back 14 years ago to the first season of American Idol.
"That moment at the end, it reminded me of the Kelly Clarkson moment. You know, when they said, 'And the winner is Kelly Clarkson,'" Cowell said. "I kind of had that same feeling again when they read her name out, and I saw her reaction and she was literally in pieces. I like that though."