Martha Stewart usually keeps a relatively calm demeanor, but even she wasn't prepared for Matthew McConaughey on set.

There is no other celebrity lifestyle expert and mogul like Martha Stewart. From an entire library of published cookbooks to a successful TV show ... Enamel Cookware Set is currently on sale ...

PEOPLE has a first look at the NBC show, which sees 12 chefs — with varying "personality problems," says Stewart — compete for a cash prize of $250,000. In an exclusive photo, the lifestyle maven is ...