Cream of Cauliflower Soup

Bahan-bahan (4 porsi)

• 1 small onion (diced)
• 2 ribs celery
• 2 tablespoons butter
• 8 cups cauliflower florets
• 3 cups chicken broth
• ½ teaspoon celery seed
• ½ teaspoon dry mustard powder
• ½ teaspoon garlic powder
• ¼ teaspoon seasoned salt
• ¾ cup heavy whipping cream
• ½ cup shredded Parmesan cheese (optional)