What is a substitute for slow cooker?

A good substitute for a slow cooker is a Dutch oven, which can be used on the stovetop or in the oven to achieve similar low and slow cooking results. Additionally, an Instant Pot or electric pressure cooker can mimic slow cooker functionality by allowing for longer cooking times at low temperatures. For stovetop methods, a heavy-bottomed pot can also work, as it retains heat well and can be simmered gently.