Vegetarian Gumbo

Bahan-bahan (8 porsi)

• 1/2 cup butter (or oil)
• 2/3 cup all-purpose flour
• 2 medium red bell peppers, cored and diced
• 2 celery stalks, diced
• 1 small white onion, peeled and diced
• 1 cup fresh or frozen chopped okra
• 5 cloves garlic, minced
• 3 cups vegetable stock
• 1 small head of cauliflower, cored and chopped into florets
• 1 pound (16 ounces) baby bella or button mushrooms, diced
• 1 (14 ounce) can fire-roasted tomatoes
• 2 teaspoons Creole or Cajun seasoning
• 1/2 teaspoon dried thyme
• 1/2 teaspoon cayenne, or more/less to taste
• 1 bay leaf
• fine sea salt and freshly-cracked black pepper, to taste
• optional topping: thinly-sliced green onions