Flavorful Skillet Steak Fajitas

Ingredients

• 1 sweet yellow onion, thinly sliced
• 1/2 teaspoon sea salt
• 1 teaspoon garlic powder
• 1 teaspoon paprika
• 2 pounds flank steak, cut into half inch strips
• 1 teaspoon onion powder
• 2 tablespoons vegetable oil, divided
• 3 cloves garlic, minced
• 1 green bell pepper, thinly sliced
• 1 teaspoon cumin
• Juice of half a lime
• fresh cilantro, chopped for garnish
• 1 red bell pepper, thinly sliced
• 1 tablespoon butter
• 6 flour tortillas for serving
• 1 tablespoon chili powder