The final five home cooks in the competition gather in the "MasterChef" kitchen, where judges Gordon Ramsay, Graham Elliot, and Joe Bastianich reveal the latest Mystery Box Challenge. The contestants have to prepare, cook, and present an incredible dish using all or some of the ingredients inside a wooden crate: a variety of ground meats and an assortment of vegetables, rice, and potatoes.
While most of the cooks are unsure as to how to dazzle the judges in 60 minutes with the given ingredients, Ben realizes that he has everything he needs to make a shepherd's pie. Suzy coincidentally chooses to make the same dish. Adrien decides to do meatballs three ways, and Jennifer goes with meatloaf.
But Christian confesses that he's stumped, and he ultimately settles on the risky choice of making chili in just one hour. Jennifer, who has been a strong competitor in the last few weeks, feels that Adrien is most likely to give her a run for her money. Adrien agrees that Jennifer is his stiffest competition.
As always, the judges pick the three dishes they think look the best and taste them. They first choose Jennifer's grownup meatloaf with roasted corn and homemade ketchup. Joe thinks the sauce is a little flat, but Chef Ramsay says that it's "absolutely delicious." Graham says that this could be Jennifer's fourth Mystery Box Challenge win.