A great recipe from lifetimemoms.com:

Ingredients

  • 1 Flank Steak –  1 3/4 lbs to albs (cut in half)
  • 1 small can of green chiles
  • 1 large red onion, chopped
  • 1/4 teaspoon black pepper
  • 1/2 teaspoon brown sugar
  • 1 teaspoon of chili powder
  • 1/4 teaspoon of cumin
  • 1/2 cup of water
  • 1 tbsp of olive oil
  • 2-3 cloves of garlic minced

Directions

  1. In a small pan, brown flank steak in olive oil on both sides.
  2. Add all ingredients to slow cooker.
  3. Cook on low for 4-5 hours if you prefer it sliced, cook 5-6 hours if you prefer it shredded.