A rich and filling soup, perfect for cold winter nights.
Preheat oven to 450 degrees F (230 degrees C).
Toss cauliflower florets with vegetable oil and 1 teaspoon salt in a bowl; spread onto a baking sheet.
Roast cauliflower in preheated oven until browned, about 25 minutes.
Melt butter in a saucepan over medium high heat. Saute onions in hot butter until soft, about 5 minutes. Stir garlic into the onion and continue to cook until fragrant, about 2 minutes more; season with curry powder, cayenne pepper, and ground turmeric. Cook the seasoned onion mixture, stirring continually, for 5 minutes more.
Stir roasted cauliflower with the onion mixture. Pour stock over the cauliflower mixture. Place a cover on the saucepan and bring the stock to a boil. Immediately remove the cover, reduce heat to low, and cook at a simmer until the liquid reduces slightly, about 10 minutes.
Puree mixture in the saucepan with an immersion blender until mostly smooth. Stir cream into the soup; season with salt and pepper. Ladle soup into bowls and garnish with parsley.
Per Serving: 359 calories; protein 5.4g; carbohydrates 15.1g; fat 32.7g; cholesterol 89.9mg; sodium 1390.9mg.