M.R.
Pork roast and pork tenderloin are different - but you can cook both in a slow cooker if that is what you are looking for. For a pork tenderloin, I like to bake mine in the oven. You can do anything with it - it is so easy. For a guaranteed tender pork tenderloin, I would salt and pepper it, coat it in honey mustard (now premade in the mustard section of the store) and wrap some bacon around it. Bake at 375 for 40 minutes. It's okay if it is a little pink in the middle - it is safe to eat like that.