In a small bowl, combine paprika, oregano, coriander, cumin, red pepper, salt and black pepper. Rub mixture over all sides of pork pieces. Spread onion in an even layer in bottom of a slow cooker crock. Place seasoned pork on top of onions.
Cover slow cooker and cook on HIGH for 5 hours or LOW for 8 to 10 hours.
Shred pork with fork and serve in flour tortillas with toppings.
In a small bowl, combine paprika, oregano, coriander, cumin, red pepper, salt and black pepper. Rub mixture over all sides of pork pieces. Spread onion in an even layer in bottom of a slow cooker crock. Place seasoned pork on top of onions.
Cover slow cooker and cook on HIGH for 5 hours or LOW for 8 to 10 hours.
Shred pork with fork and serve in flour tortillas with toppings.