3 T. unsalted butter
4 garlic cloves, minced
2 tsp. minced canned chipotle chile in adobo sauce
3/4 c. chopped fresh cilantro
1/2 c. orange juice
1 T. Worcestershire sauce
1 1/2 lbs. boneless, skinless chicken breasts
1 tsp. yellow mustard
salt & pepper
12 (6-inch) flour (or corn) tortillas, warmed
shredded lettuce, grated cheese, diced avocado,
diced tomato & sour cream (for toppings)
Melt the butter in a 12-inch skillet over medium-high heat. Add the garlic and chipotles and cook until fragrant, about 30 seconds. Stir in 1/2 cup of the cilantro, the orange juice, and Worcestershire and bring to a boil. Add the chicken and simmer, covered, over medium-low heat until the chicken is cooked through, about 10-15 minutes (depending on thickness it might be more), flipping the chicken halfway through. Transfer to a plate and tent with foil.
Increase the heat to medium-high and cook until the liquid is reduced to 1/4 cup, about 5 minutes. Off the heat, whisk in the mustard. Shred the chicken into bite-size pieces and return to the skillet. Add the remaining cilantro and toss until well combined. Season with salt and pepper. Serve with the tortillas and top with desired toppings.