Zesty Cajun Skirt Steak

1/4 c. barbecue sauce
1 tsp. grated lime zest
2 tsp. lime juice
1 1/2 lbs. skirt steak, halved crosswise
1 tsp. dry cajun seasoning
1/2 tsp salt
lime wedges, parsley sprigs, and additional barbecue sauce optional.

Prepare grill for direct-heat cooking.
Combine barbecue sauce, lime zest and 1 tsp. lime juice;reserve.
Rub both sides of steak with seasoning and salt.
Grill steak, turning once, 3-5 minutes per side for medium rare; sprinkle with remaining lime juice and brush with reserved sauce mixture during last minute of cooking.
Let stand 5 minutes before slicing.
If desired, garnish with lime and parsley and serve with additional barbecue sauce.