Hey I've been a member for a very long time, I haven't really contributed so I just thought I would try to help you make 300+ gold in less then 10 minutes.
I've tried searching for it, and I couldn't find it. Sorry if it's a repost, I'm just trying to contribute.
I've choosen to write it as a step-to-step guide to make it as easy as possible to follow.
This guide is server dependant, it's different how much the recipe sells for.
1. Get 7
Small Spider Legs you can buy them at AH or farm them.
2. Make a night elf character.
3. Log to your main and send the 7
Small Spider Legs and 10 Silver to your new night elf character.
4. Log to your night elf again.
5. Run to Dolanaar (the 2nd town) and get the 7
Small Spider Legs from the mailbox.
6. Go to the cooking trainer and learn cooking.
7. Turn in the next quest you get from the cooking trainer.
8. Send the recipe you receive
Recipe: Kaldorei Spider Kabob to your main.
9. You can now sell it at neutral AH or normal AH for 300+ gold.
Wowhead price says: 325g and this should take less then 10 minutes!
Tips:
Do never post more then 1 recipe at a time.
Check out the price for the recipe before doing it. Maybe It's not that much worth on your server