01 -
Put the flank steak into the slow cooker and coat it with the olive oil.
02 -
Mix together salt, paprika, cumin, chili powder, garlic, and pepper in a tiny bowl. Spread this mixture over the steak evenly.
03 -
Layer on the chopped onions, cilantro, and one lime’s juice over the seasoned steak. Pour the beef stock around it all in the slow cooker.
04 -
Put on the lid, then let it cook until soft. Low setting takes 6-8 hours, while high takes about 3-4 hours.
05 -
Use two forks to break the cooked steak apart into shreds. Add the second lime’s juice, stirring it into the beef.
06 -
Heat up butter in a large pan or griddle on medium. Fry the tortillas briefly, just until soft with crispy edges—about one minute.
07 -
Let the tortillas cool slightly. Stack two together for each taco, add some shredded beef, and finish with the toppings you like best.