Can you switch from low to high on a slow cooker?

Yes, it's generally safe to switch a slow cooker from low to high if the temperature change isn't too extreme. However, it is important to check the manufacturer's instructions for your slow cooker to make sure this is allowed and to follow any specific instructions they provide. Some slow cookers may only allow you to switch between high and low settings when the cooker is turned off.

The slow cooker will take longer to reach its high temperature when switched from low, so it's best to do this at the beginning of cooking or when the food is fully thawed. Switching from low to high can increase the cooking temperature by 20 to 30 degrees Fahrenheit.