Steak Fajitas

Ingredients

• 1 pound sirloin steak
• ½ teaspoon salt
• ½ teaspoon fresh ground black pepper
• 1 large onion
• 1 medium red bell pepper
• 1 medium yellow bell pepper
• 2 cloves garlic
• 2 tablespoons neautral oil such as avocado oil, grapeseed or canola oil
• 1 large tomato
• 1 teaspoon ground cumin
• ½ teaspoon ground coriander
• ½ teaspoon cayenne pepper
• 1 lime
• ½ medium avocado
• 8 6-inch whole wheat tortillas
• ½ cup Greek yogurt
• ¼ cup packed cilantro leaves