Southwest Chicken Barley Chowder

Name: Southwest Chicken Barley Chowder
Ingredients: 2 tablespoons olive oil; 1 pound boneless skinless chicken breasts, cut into 3/4-inch pieces; 1 small onion, finely chopped; 1 package (12 ounces) frozen mashed winter squash, thawed (about 1-1/3 cups); 3/4 cup quick-cooking barley; 2 teaspoons reduced-sodium taco seasoning; 1/2 teaspoon salt; 1/4 teaspoon pepper; 1 carton (32 ounces) reduced-sodium chicken broth; 1 can (15 ounces) black beans, rinsed and drained; 2 cups frozen corn; 1 cup half-and-half cream; 1/2 cup salsa; 1/2 cup chopped fresh cilantro; Diced avocado and chopped tomatoes, optional