Before opening the oysters place them in a bowl and allow cold water to run over them for about 5 minutes as you gently toss the oysters in the bowl. Dump the water out every now and then to make sure it is as clean as possible.
If you premade the garlic butter you can start topping them right away. If you still have to make the garlic butter place the oyster on ice or in the fridge until you’re ready to top them.
Add the butter and garlic to a heavy saucepan and allow it to simmer on low for 5 minutes. After the garlic has simmered, add the seasonings and chopped parsley to the pan.