Yes, it is possible to turn off a crock-pot without the lid. The lid of a crock-pot is primarily used to retain heat and moisture during the cooking process, but it is not an essential component for turning off the appliance. The heating element and controls of the crock-pot are typically located in the base unit, and that's where you find the on/off switch or temperature settings.
To turn off a crock-pot without a lid:
Locate the power cord: Find the power cord that connects the crock-pot to the electrical outlet.
Unplug the crock-pot: Gently pull the power cord from the electrical outlet to disconnect the crock-pot from the power source.
Turn the control knob to "Off" (if applicable): Some crock-pots have a separate control knob or switch to turn the appliance off. Make sure this is set to the "Off" position.
By unplugging the crock-pot and ensuring any control settings are set to "Off," you effectively turn off the appliance, regardless of whether the lid is on or not. Keep in mind that once you turn off the crock-pot, it will begin to cool down, so if you plan to continue cooking or keep the food warm, you should leave the lid on until you're ready to serve or store the food.