On the Season Two premiere of MASTERCHEF's "Junior Edition," America's first-ever MASTERCHEF JUNIOR, Alexander Weiss, returns to the kitchen as a special guest. Alexander presents the mystery box challenge, and the 16 junior home cooks will be tasked with preparing impressive dishes using the special guest's favorite ingredients, including pork chop, pork tenderloin, green apples, hazelnuts, Brussel sprouts, filo dough, fingerling potatoes, wild rice, whole grain mustard and artichoke. The winner of the challenge will have a significant advantage and select which of the judges' favorite proteins the remaining contestants will prepare in the elimination round. Later, the 12 junior home cooks with the best dishes will advance in the competition.

The kids pair up in a three-legged challenge to create a delicious box of 12 cupcakes. Later, Gordon's mom visits the MASTERCHEF kitchen as a special guest judge, and the remaining junior home cooks will have to prepare their own versions of one of Gordon's favorite dishes growing up. Find out which kids impress the judges and advance to the next round.