No, it is not recommended to use a roasting pan on the stove top as a substitute for a slow cooker. Roasting pans are typically designed for use in the oven and are not suitable for direct heat from a stove burner.
A slow cooker, also known as a crockpot, is specifically designed to cook food slowly at low temperatures, allowing for the long, gradual cooking of ingredients. Slow cookers have built-in heating elements and temperature controls to ensure safe and effective slow cooking.
Using a roasting pan on the stove top could lead to uneven heating, scorching, or even damage to the pan. It's always best to follow the manufacturer's instructions and use the proper cooking equipment for the intended purpose. If you don't have a slow cooker, you can consider alternative cooking methods such as using a Dutch oven or a low-temperature setting in the oven to achieve similar slow-cooking results.