Flank Steak Fajitas

Certified Angus Beef ® flank steak

Juice of one lime

fajita seasoning packet (2 teaspoons)

vegetable oil, divided

large red onion, quartered and sliced

green bell pepper, seeded and cut into 1-1/2 x 1/4 inch strips

small flour tortillas

Optional accompaniments: grated cheese, salsa, guacamole, sour cream, fresh chopped cilantro