Spicy Vegetarian Cabbage Soup

Bahan-bahan (8 porsi)

• 1 tablespoon olive oil
• 1 medium white onion, peeled and diced
• 6 cloves garlic, peeled and minced
• 6 cups vegetable stock
• 2 medium carrots, diced
• 1 stalk celery, diced
• 1 pound Yukon gold potatoes, diced
• 2 (10-ounce) cans fire-roasted diced tomatoes and green chiles (or simply fire-roasted tomatoes, for a milder soup)
• 1 (15-ounce) jar roasted red peppers, drained and chopped
• 1 (15-ounce) can Great Northern beans, rinsed and drained
• 1 small green cabbage, roughly chopped
• 1 1/2 teaspoons ground cumin
• 1/2 teaspoon crushed red pepper flakes (or more/less, to taste)
• 2 handfuls baby spinach or kale
• Kosher salt and freshly-cracked black pepper, to taste
• optional toppings: chopped fresh cilantro or parsley