Sausage Gumbo

Name: Sausage Gumbo
Ingredients: 12 ounces hot Italian turkey sausage links, removed from casings; 2 teaspoons canola oil; 1 large onion, diced; 4 cloves garlic, minced; 1 teaspoon Cajun seasoning; 2 tablespoons all-purpose flour; 4 cups chopped tomatoes; 4 cups reduced-sodium chicken broth; 2 ½ cups frozen chopped okra; ¾ cup instant brown rice; 1 bunch scallions, trimmed and sliced (optional)