Ingredients

1 medium head of cauliflower
1 teaspoon olive oil
1 medium white onion, chopped
2/3 cup corn kernels (1 medium-size ear)
1 tablespoon unsalted butter
2 medium zucchini, chopped
1 teaspoon dried thyme
1 teaspoon sea salt
1/4 teaspoon white pepper
1/3 cup unbleached flour
3 cups water
12 ounces low-fat milk
1 tablespoon fresh lemon juice
3 tablespoons fresh basil, chopped