Foster's Home for Imaginary Friends - Season 3 Episode 8 -

Mr. Herriman becomes addicted to carrots. Meanwhile, Bloo tries desperately to avoid eating Frankie's "it" by doing bad things, but Mr. Herriman ignores or misinterprets the bad deeds and sends everyone else to bed with no supper instead. Also, Frankie learns to cook "it" under the guiding (and painful) wooden spoon of Madame Foster.