Place your roast into you crockpot (can be frozen!).
Mix your tomato sauce and taco seasoning together.
Pour on top of roast.
Cook on high for 4-5 hours or low for 7-8 hours.
Enjoy with soft or hard taco shells, sour cream, shredded lettuce, shredded cheese, guacamole!!
*Many times when I want to make these tacos I don't have tomato sauce in my pantry (I seem to use it a lot in cooking and for some reason I never buy enough of it.) so I just substitute ketchup instead, it works just as well in my opinion.
Recipe by Smashed Peas & Carrots at https://smashedpeasandcarrots.com/crockpot-shredded-beef-tacos/