This is a recipe from Pillsbury's Slow Cooker Recipe book that I've altered slightly. The fennel seeds and paprika really give the tenderloin a fantastic taste! Though the Yukon Gold and sweet potatoes go great with the pork, any potato will work.
2. In a small bowl combine fennel seeds, oregano, paprika, garlic powder, salt and pepper. Mix well.
3. Rub mixture onto pork tenderloin. Tenderloin might have to be cut in half in order to fit into the slow cooker. (The rub can be applied to the tenderloin the night before and refrigerated to save time and add extra flavor.).