Beef Fajitas with a Cilantro Lime Marinade

INGREDIENTS

• 2 limes, juiced
• 1 tablespoons olive oil
• 2 garlic cloves, minced
• 1 jalapeno, seeded and minced
• 3 tablespoon fresh cilantro, finely chopped
• 1 teaspoon cumin
• 1 teaspoon salt
• 2 1/4 pounds flank steak, trimmed of fat
• 1 green bell pepper, thinly sliced
• 1 red bell pepper, thinly sliced
• 1 yellow bell pepper, thinly sliced
• 1 red onion, thinly sliced
• 1 yellow onion, thinly sliced
• 12 flour tortillas, warm