Mix all the spices together in a small bowl. Rub the entire spice mixture evenly into the skirt steak. Place the steak into the bottom of a crock pot. If you have any left over spice mixture that didn't stick to the steak, sprinkle it in the crock pot as well. You want all that flavor in there!
Place the chopped onions, peppers and jalapeno on top of the steak. Cover and turn the crock-pot on low. Cook for 8 hours.
Remove the steak from the crock pot and shred using two forks. The meat should be very tender and will nearly fall apart with very little effort. Place the meat back in the crock pot.
To assemble the tacos, heat a corn tortilla in a skillet over medium heat. Sprinkle with a couple tablespoons of cheese and allow it to melt. Fill your tortilla with some meat, your favorite salsa, and a slice of avocado. Sprinkle with some cilantro and a squeeze of lime. Enjoy!
Notes
You may use flank steak in this recipe as a substitute, but I prefer the skirt steak. It is juicier and has better flavor.
Recipe by Laura's Cozy Kitchen at https://www.laurascozykitchen.com/crock-pot-beef-carnitas-tacos/