2  tablespoons  fajita seasoning
1/2  teaspoon  dry mustard
1  teaspoon  pepper
2  tablespoons  olive oil
1  (1 1/2-pound) package flank steak (1/2-inch thick)

Combine first 3 ingredients. Rub olive oil evenly over flank steak; sprinkle with seasoning blend. Cover and chill at least 4 hours.

Grill, covered with grill lid, over medium-high heat (350° to 400°) 7 to 8 minutes on each side or to desired degree of doneness. Cut steak diagonally across grain into thin strips. Serve with Salsa.