Slow cooker pepper steak ( all recipes)

This looks pretty easy. I am not sure about the sauce however. I do know I love stewed tomatoes in my mexican dishes. Sure they add alot of flavor but this sauce looks weak to me. I am on the search for something more worchestershire ( spelling?) based or something. Not sure. Might make it as shown and see what I think. Can always add more soy or worchestershire at the end. Also would serve this over rice not noodles. Enjoy!--Tips