From July 31st through August 7th, SSG says we can have ourselves a vacation in Frostbluff -- complete with Yule Festival quests and a new quest that yields a cosmetic pet and the title "Bringer of Sweets."
There's an ever-growing list of mobs and locations on the LOTRO forums to complete the Stolen Sweets quest, but I figured I should share something here that's easy on the eyes (and possibly a time-saver, because I like to complete things the easy way!).
As the quest story goes, a Giant Eagle was supposed to be delivering a bag of sweets to Frostbluff, and was only flying over snowy areas of Eriador. She somehow didn't realize there was a hole in her bag, and she was able to see winter beasts making off with the goods. It's your job to get them back.
Don't panic, because they made this quest a LOT easier than it sounds. A quick peek at your World Map will show you that they have conveniently highlighted areas where you can find mobs that will drop the sweets. There's a variety that will drop them, just keep in mind that they have to be "winter beasts." I have shared pictures and locations of where I found my items consistently on two characters -- which were also the first applicable mobs within reach of my stable locations.
Fruit Cake @ Thorin's Gate
Since you're standing right by the stable master in Frostbluff, you should take a horse to Thorin's Gate. In this area, any of the Highland Wildcats (lynxes) will drop the Fruit Cake.
Gingerbread & Hot Cross Buns @ Sarnur
Hoof it (or take a stable) to Noglond in the Vale of Thrain, and cut through Orodost to visit our favorite level 50 grind, Sarnur. Head to the right and down passageway lined with Dourhands and trolls until you reach the open cavern with all the trolls, snow-beasts and polar bears. A Formidable Snowbear will drop the Gingerbread, and a Cave Snow-beast will drop the Hot Cross Buns.
Plum Pudding & Flask of Wassail @ Forochel
From Sarnur, I used a milestone/return skill to get to Bree. From the West Bree stable I headed for Suri-kyla in Forochel. A straight shot (east) out of Suri-kyla takes you to the shore with all the ice wyrms -- ignore them and go up the hill behind them. You will find the Brumal Grim which drops the Plum Pudding, and the Ice-shore Peikko which drops the Flask of Wassail.
Peppermint Treats @ Misty Mountains
From the Suri-kyla stable, head for Rivendell. At Rivendell, take the stable to Gloin's Camp in the Misty Mountains. From there, take the stable to the High Crag. Then hoof it over to Giant Halls. One of the Frost Giants there will drop the Peppermint Treats.
Bringer of Sweets
From there, you need to head back to Frostbluff. The quest-giver will then direct you to dole out the sweets to the children of Frostbluff -- you can find all of the children in the workers' quarter. When you've handed it all out, go back to the child with the quest ring and they will give you your new pet rabbit and fancy title!