Heat a medium sauce pan over medium-high heat. Add oil. Wait until oil starts to smoke and add the onions. Sauté for 3-4 minutes. Add garlic, mussels, wine, parsley, salt and pepper. Cover pan immediately.
Give pan a good shake, and let steam for about 2 minutes. Check to see if the mussels have opened; if not, let steam for another minute.
If some mussels have not opened, discard them. Don't cook any longer then 3 minutes because mussels are very easy to overcook and they become rubbery.
Sprinkle with fresh parsley and serve immediately. Submitted by: Daniel