Mushroom Gumbo

Name: Mushroom Gumbo
Ingredients: 1⁄4 cup vegetable oil; 1⁄4 cup plain flour; 1 medium brown onion, chopped; 1 teaspoon chili (chopped); 1 teaspoon dried oregano; 2 -3 teaspoons garlic; 2 carrots, chopped; 1 green capsicum, chopped; 400 g button mushrooms, chopped; 1 (400 g) can crushed tomatoes; 1 (400 g) can red kidney beans, drained & rinsed; 2 cups vegetable stock; 5 -6 halved cherry tomatoes (optional)