Thawing & Preparation Remove the Oyster Grill Kit from frozen storage and puncture the vacuum bag or remove the tray from the outer packaging. Thaw under refrigeration until fully defrosted. Prior to cooking, allow oysters to sit at room temperature for approximately 30 minutes. Preheat the grill to medium-high heat or the oven to 400°F. Grilling Place oysters directly on the grill, keeping them level so the butter and toppings stay inside the shells. Grill for 5–6 minutes, or until oysters are heated through and butter is fully melted. Monitor closely for flare-ups from dripping butter and adjust the placement as needed to prevent scorching. Baking Arrange oysters on a baking sheet and bake at 400°F for 6–8 minutes, or until thoroughly heated and butter is melted and bubbling. Serve immediately.