Kourtney posted pictures of her whipping up a few decadent dishes with her sister Kylie Jenner.
"Kylie is learning cooking lessons from Kourtney today," the eldest sibling quipped.
"No, not from Kourtney," the makeup mogul replied. "I did this all by myself."
She also shared a snapshot of her mother, Kris Jenner, who rocked a stunning ensemble.
Kim Kardashian posted some footage from the big day, too, including images of her grandmother, MJ, and her little ones.
In addition, Kendall Jenner shared a video of the whole family gathering around a fire outside. The footage showed Kim and Kanye West holding their children, Chicago West and Saint West, as well as Kylie cuddling Stormi Webster with Travis Scott nearby. The model also posted pictures from the meal, as well as snapshots from a family bike ride.
"So thankful, wow," she captioned the series.