Easy Chicken Enchilada Casserole

Name: Easy Chicken Enchilada Casserole
Prep time: 15 min
Cook time: 30 min
Total time: 45 min
Cuisine: Mexican
Ingredients: 2, 8 ounce cans tomato sauce; 2 tablespoons tomato paste; 1 ½ cups chicken broth; 1 teaspoon sea salt; 2 tablespoons chili powder; 2 teaspoons cumin; 2 teaspoons oregano; ½ teaspoon ground black pepper; 4 cups shredded chicken (or about 2 pounds chicken breast, cooked and shredded); 6 corn tortillas, torn in half; 3 cups shredded Mexican blend cheese; ½ cup sour cream; 1/4 cup lime juice; 1 large avocado, diced, for garnish; ¼ cup fresh chopped cilantro, for garnish