Mix the Parmesan, mozzarella, garlic, lemon juice, lemon zest and parsley in a bowl and reserve.
Place the butter, lemon juice, hot sauce, Worcestershire, chopped garlic, granulated garlic and 1/2 cup water into a small pot on the stove. Slowly melt and whisk ingredients until incorporated. Ladle this into a thermos to be used at the campsite! Making things ahead makes parties a lot more fun for the host, yay!
Preparing your Oysters
To make your life easy, prepare the oysters ahead of time. Shuck the oysters. If you have never shucked an oyster before, you will need an oyster shucker. I have a really cute Hutzler Oyster knife that looks like an oyster! #socute. Place your shucked oysters in a super cool Outset Cast Iron Oyster pan. Top each oyster with a liberal amount of the cheese mixture.
Take the top of the shell and place it over the shucked, dressed oyster and wrap the pan with tin-foil. Then place the oysters in a cooler with crushed ice around it. Once you are ready to serve, bring the oysters out of the cooler for 10 min prior to putting them on the fire.
Charring your oysters
First things first, get that fire roaring!
Lay down a grate over the flames. Place your prepared oyster pan (foil removed) on the grate for 7-10 min. until the cheese is melted. You will need long tongs and a sturdy oven mitt for pulling the pan off the grate. Remove the oysters from the grate with tongs and place them onto a cookie sheet or a heat-proof surface.
Ladle some melted garlic butter over the oysters and serve with grilled bread to soak up the juices and butter! Make sure to spritz with a little lemon to add a touch of brightness. So fresh and delicious!
Not in the mood to shuck and make ahead? You can simply place un-shucked oysters in your pan, then, place on the campfire and wait about 5-10 min. for them to sizzle, spit, and pop open. Serve them with a spritz of lemon, hot sauce and maybe, if you like, cocktail sauce.