An easy cauliflower soup recipe is AllRecipe.com's Simple Cauliflower Soup, which calls for sautéing the cauliflower, then simmering it in vegetable stock. The recipe takes about 15 minutes to prepare and serves around six people.
To make Simple Cauliflower Soup, start by melting 2 tablespoons butter over medium heat in a large pot. Cook a chopped onion in the butter for five minutes. Add a head of cauliflower separated into florets and a peeled and diced potato, then cook for five more minutes. Stir in 2 cups vegetable stock, bring to a boil, then simmer for 20 minutes. Stir in 2 cups milk and add salt and pepper to taste.
Another easy cauliflower soup recipe creates a cheesy version of the basic recipe. First, bring a head of cauliflower separated into florets, a shredded carrot, 1/4 cup chopped celery, 2 1/2 cups water and a vegetable bouillon cube to a boil. Cover and simmer for 12 to 15 minutes. In a separate pan, melt 3 tablespoons butter, then add in 3 tablespoons flour, 3/4 teaspoon salt and 1/8 teaspoon pepper. Slowly stir in 2 cups milk and bring the mixture to a boil.
To finish the soup, add 1 cup shredded cheddar cheese to the milk mixture. Stir the milk mixture into the cauliflower mixture.