Tales from Agrabah: Seven Original Stories of Aladdin and Jasmine by Katherine Applegate, 96 pages

Description: "This richly illustrated collection of stories takes readers back in time to a different Agrabah, before Aladdin and Jasmine ever met. Included are tales of how Jasmine receives her pet tiger Rajah, why Abu leaves his life of luxury to live on the streets of Agrabah, and the magical night that the street urchin and the princess meet under the night sky."

Considered by many fans (me included) to be the best original Aladdin storybook written so far.

One True Love by Annie Auerbach, 24 pages

Description: "Jasmine retells the tale of how she and Aladdin fell in love, proving everyone enjoys a love story—even the Genie!"

Mostly about Jasmine and her suitors before she meets Aladdin. It's a short book and aimed at younger readers, but the illustrations are beautiful and it's a really cute story.

My Best Friend is Jasmine by Lisa Ann Marsoli, 32 pages

Description: "Jenna and her younger brother and sister are hungry and living on the streets in Agrabah—that is, until Jenna becomes best friends with Princess Jasmine! Find out how this streetwise little girl gets invited to live in a princess’s palace in this full-color padded and glittered hardcover storybook."

Disney's Aladdin: Six New Adventures — box set

• Aladdin's Quest by Emily James, 60 pages
  Description: "High in the palace is a tower room where no one ever goes. In that room there is evil at work. Accidentally, Aladdin interferes with a curse cast there by Jafar — before Jafar was cast out of the palace for good. Now Jasmine is in great danger, and Aladdin is up against the dark magic of a power-mad sorceress! Can he untangle the mess he's made and rescue Jasmine — without Genie's help?"
   
• Abu and the Evil Genie by Michael Teitelbaum, 60 pages
  Description: "There's a bad-news genie named Ashab Khan on the loose—and he's kidnapped Abu! Aladdin, Jasmine, and the Magic Carpet follow Khan's smoky green trail to an invisible desert oasis, where the giant green genie makes Abu his slave. Can Aladdin save Abu and set a trap for Khan the All-Powerful—before he destroys Agrabah?"
   
• Jasmine and the Disappearing Tiger by Leslie McGuire, 60 pages
  Description: "Ever heard of Omar and the Four Dates? Aladdin wishes he never had. Omar is a magician who's been invited to perform at the palace. Using magic spells, he makes elephants and dancing ropes appear. That's fun! He also makes Rajah disappear. That spells trouble! To find the disappearing tiger, Aladdin must first rescue Omar from a creepy sheik who's holding him captive. And that's double trouble!"
   
• A-Mazing Aladdin by Alex Simmons, 60 pages
  Description: "Ben Baba Abad is back! After 100 years of peace, the sorcerer has returned to Agrabah to spread his evil. There's chaos in the marketplace. The palace guards are acting strangely, and the Genie is imprisoned in Abad's underground temple of evil. To rescue the Genie and save Agrabah, Aladdin and Jasmine must master the terrible maze that surrounds the temple, and the dangers lurking within. And if they make it... they still have to face Ben Baba Abad!"
   
• The Magic Carpet's Secret by Joanne Barkan, 60 pages
  Description: "Many, many years before Aladdin became the prince of Agrabah, a mysterious sorcerer named Khuriya wove 100 magic carpets, then scattered them throughout the desert. Now someone is stealing the carpets! Aladdin, Jasmine, Abu, and the Genie must journey into the desert to find out who has taken the carpets — and why. The very last carpet has just been stolen... and this one is Aladdin's friend."
   
• Don't Bug the Genie by Page McBrier, 60 pages
  Description: "What a mess! The Genie's belly jewel has been stolen. Worse still, he's been bitten by a strange bug. Now he's blowing steam out of his mouth, and his magic is out of control! To find a cure, Aladdin must cross the desert in search of the Well of Forgetfulness. He must catch the rare jewel bug. But if he doesn't, the Genie may never get his magic powers working again!

The Further Adventures of Aladdin series, by A. R. Plumb

1. A Thief in the Night, 59 pages
   Description: "Aladdin and Jasmine can't wait to meet the powerful sorcerer who's visiting Agrabah. But once they do, it doesn't take them long to realize the mysterious visitor has a few tricky plans up his sleeves—including making the Sultan's magic ring, the Mystic Blue Diamond, disappear!"
    
2. Birds of a Feather, 60 pages
   Description: "Aladdin is having a bad day. The Sultan is sick, and Aladdin has to take over his duties—dealing with paperwork, overseeing the palace staff, even judging a dog show! The worst part is that nobody seems to appreciate what a big job it is—especially Iago. Aladdin wishes that birdbrain could see what it's really like to rule the roost for a day. But when the Genie accidentally zaps Aladdin and Iago into each other's bodies, Aladdin gets a bird's-eye view of the whole situation..."
    
3. A Small Problem, 60 pages
   Description: "An evil sorcerer gives the inhabitants of the palace of Agrabah enchanted drinking water, with the power to reverse aging. But this fountain of youth never shuts off and Iago speedily regresses to an egg. It's up to Aladdin and Jasmine to trick the sorcerer into revealing the antidote."
    
4. Iago's Promise, 60 pages
   Description: "Iago has promised not to say an unkind word about anyone for two days. He'll be rewarded with a brand-new super-deluxe birdbath if he makes it. The trouble is he's overheard the newest members of the palace staff making suspicious plans for the upcoming Ceremony of Fireworks. Iago doesn't want to risk losing his prize, but if he doesn't say something soon, he's afraid the Ceremony might be more explosive than anyone bargained for."