In January of 1983, It was Assistant Editors' Month @ Marvel Comics and the newest issue of Marvel Team-Up (#137) featured "Aunt May & Franklin Richards VS. Galactus" in a story entitled, "Twinkle, Twinkle".
The story starts off as Galactus' current herald is killed by an exploding planet. Galactus must find a replacement and is drawn to Earth by the hidden power of Mr.Fantastic & Invisible Women's child, Franklin Richards, who at the time is being babysat by Peter Parker's Aunt May.
Protecting Franklin from Galactus, May is mistakenly turned into the new herald,"Golden Oldie".
Franklin tries to feed Galactus' hunger with his "Twinkle" spongecake treat and it pleases the world-eater. Galactus sends Golden Oldie to retrieve all of Earth's Twinkles so he can feed. The story goes on from there...