[header] How to make pie in a slow cooker [title] Grease the slow cooker and saute the meat and onion. [step] Grease the slow cooker with butter or spray it with cooking spray. Place 1½ pounds (680 g) of ground beef or lamb and 1 chopped onion into a large skillet. 
Cook the meat and onion over medium heat until the meat is completely cooked. Drain off any grease from the pan and discard it.