Steps
1. Preheat your grill to medium-high heat.
2. Carefully shuck the oysters, keeping them in their shells and placing them on a grill-safe tray.
3. In a bowl, mix the cream cheese, mayonnaise, fish sauce, and chili sauce until smooth.
4. Spoon the cheese mixture generously over each oyster.
5. Sprinkle the grated cheese on top of the creamy layer.
6. Place the tray on the grill and close the lid. Grill for about 5-7 minutes or until the cheese is bubbly and golden.
7. Remove from the grill and serve immediately with lime wedges on the side.