Weight Watchers 0 Point Tortilla Soup

INGREDIENTS

• 1 cup onion, chopped
• 2 garlic cloves, chopped
• 3 green onions, chopped
• 2 (12 ounce) cans diced tomatoes
• 4 cups low-fat chicken broth
• 1/3 cup salsa
• 1/2 red pepper, chopped
• 1/2 green pepper, chopped
• 3 -4 celery ribs, chopped
• 1/3 cup fresh cilantro
• 1/2 teaspoon cumin
• 1/2 teaspoon chili powder
• 1/2 teaspoon basil
• 4 tablespoons fat free sour cream
• 4 tablespoons flour, to thicken (I only use 1 because I don't like thick soup)