Place roast in the bottom of the slow cooker. Mix seasonings and sprinkle over roast.
Rub into the roast with the back of a spoon. Pour tomatoes and green chiles over the top of the beef.
Cook on low for 8 hours.
Shredded beef with two forks and stir into sauce. Use a slotted spoon to remove from slow cooker and serve.
Use as filling for tacos, burritos, enchiladas, nachos or on a bun, with your favourite Tex Mex topping!
**The sauce may be very watery. If you'd like to serve it with the sauce, remove the beef from the slow cooker and set aside. Pour the sauce into a saucepan and cook until reduced. Shred the beef and mix with the sauce.
Recipe by Life at Cloverhill at https://lifeatcloverhill.com/2016/02/tex-mex-slow-cooker-shredded-beef.html