The mum-of-two, who became the only US First Lady to appear on a reality television show, stressed on the need to cut down childhood obesity through healthier meals, better school lunches, the use of farmers' markets and exercise.
Michele further brought with her a secret ingredient that she later revealed were sweet potatoes from the White House garden.
"It's important for these kids to have a hands-on experience," Times Online quoted her as saying.
"And now we're expanding the tours of the garden to any public [state] schoolchildren that come to Washington DC, and we're doing those on a regular basis, and it's just been a wonderful educational addition," she added.
The two-hour special also featured White House executive chef Cristeta Comerford and award-winning restaurateur Bobby Flay who competed against Iron Chef regular Mario Batali and celebrity cook Emeril Lagasse.