To boil eggs in a slow cooker, you should place the eggs in the slow cooker and cover them with water. Set the slow cooker to high heat and let it come to a boil. Once boiling, reduce the heat to low and continue cooking for 1 to 2 hours. The cooking time can vary depending on the desired level of doneness. For a soft-boiled egg, cook for 1 hour, while for a hard-boiled egg, cook for 2 hours. It's important to note that the cooking time may also be affected by the size of the eggs and the specific slow cooker model.

The reason for the longer cooking time in a slow cooker compared to a traditional pot is due to the lower and more consistent heat. Slow cookers maintain a steady temperature, which allows for a more gradual and even cooking process. This method is particularly useful for hard-boiled eggs because it ensures that the egg whites and yolks are fully cooked without overcooking the yolks. According to the USDA, eggs should be cooked to an internal temperature of 160°F (71°C) to ensure safety and proper cooking. In a slow cooker, the lower heat helps achieve this temperature without the risk of scorching or boiling over, which can happen in a traditional pot. Additionally, the slow cooking process helps to retain more of the egg's nutrients compared to rapid boiling methods.