Fire Roasted Vegetarian Gumbo

Name: Fire Roasted Vegetarian Gumbo
Ingredients: 1 serrano pepper; 1 banana pepper; 1 small jalapeno chile pepper; 0.25 cup canola oil; 0.25 cup all-purpose flour; 2 tablespoons canola oil; 2 celery ribs, chopped; 1 large onion, chopped; 3 green bell peppers, chopped; 1 quart vegetable broth; 2 cloves garlic, minced; 2 tablespoons Cajun seasoning; 1 tablespoon smoked paprika; 1 tablespoon file powder; 1 cup fire-roasted tomatoes; 1 sweet potato, peeled and cubed; 1 parsnip, peeled and cubed; 1 cup canned red beans, rinsed and drained; 1 cup canned black-eyed peas, rinsed and drained; 2 cups frozen cut okra, thawed