Heat the pan on medium heat with ghee. As it’s heating up, start dicing the onion and garlic.
After it’s heated (about 5 min or so), dump the onion and garlic in and sauté it (just move it around a lot using a spatula or spoon) until the onions are turning translucent.
When you’re satisfied with the onions and garlic, take them out of the pan and put them in a bowl until later.
If your pan needs more ghee, drop some more in. Then, throw in the mussels, salt, pepper and parsley. Keep stirring and moving the mussels around. Remember, they are already cooked so we are just heating them and getting some flavors going.
After 3-5 minutes of getting the mussels warmed up, put the onions and garlic back in and stir it all together for a few more minutes.
Then plate and serve!