Ingredients

• 2 heads cauliflower , broken into florets
• olive oil cooking spray
• 0.25 cups olive oil
• 1 large onion , chopped
• 4 cloves garlic , chopped
• 6 cups water
• salt and ground black pepper to taste

Instructions

1. 1 Gather the ingredients.
2. 2 Soak cauliflower florets in a large bowl of lightly salted water for 20 minutes. Drain well, then pat dry. Set an oven rack about 6 inches from the heat source and preheat the oven's broiler. Line a baking sheet with heavy-duty aluminum foil.
3. 3 Arrange cauliflower in a single layer on the prepared baking sheet; spray evenly with cooking spray.
4. 4 Broil in the preheated oven until browned, 20 to 30 minutes.
5. 5 Heat oil in a large soup pot over medium heat. Add onion and sauté until translucent, about 5 minutes. Stir in roasted cauliflower and garlic. Pour in water, season with salt and pepper, and simmer until all vegetables are tender, about 30 minutes.
6. 6 Purée soup with an immersion blender until smooth.

Nutrition per serving