Broiling and baking are two recommended methods for reheating precooked lobster. Each method requires a food thermometer to ensure that the lobster reaches an internal temperature of 180 degrees Fahrenheit before consumption.
To reheat a lobster in the oven, preheat it to 350 degrees. Brush the lobster with melted butter and lemon juice, wrap it in aluminum foil and set it atop a baking tray. Bake the lobster for 5 to 10 minutes or until it reaches 180 degrees. To broil the precooked lobster, preheat the broiler, insert the thermometer into the lobster and place it approximately 4 inches away from the heat source. Broil the lobster until it reaches the recommended internal temperature reading.