The secret to this dish is a knockout garlic-herb butter.
Preheat broiler with oven rack 3 inches from heat. Pulse first 8 ingredients in a food processor until well combined.
Arrange oysters in a single layer in a jelly-roll pan. Spoon 2 tsp. butter mixture into each oyster. Broil 4 minutes or until edges curl and butter drips over the shell.