Place flank steak in slow cooker and cover flank steak with Mojo marinade and cook on low for 8 hours.
When ready to serve, heat a large skillet over medium-high heat and add olive oil, onion and jalapeños. Allow to saute until the onion is translucent, about 7 minutes.
While onion mixture is cooking, remove flank steak from crock pot and shred (toss any leftover marinade).
Once the onion mixture is ready, add garlic and saute for 30 seocnds.
Then add the shredded flank steak, tomato sauce, and salt and incorporate all the ingredients together. (I do this with two forks and just do the same motions I use to shred the flank steak).
Allow to cook for 5 more minutes and then serve!
