Harvest Potato Soup
1 bay leaf 1 cup cauliflower florets 1 cup chopped kale, or to taste 1 cup diced zucchini 1 stalk celery, diced 1 teaspoon chopped fresh dill 1 teaspoon smoked paprika 2 carrots, diced 2 cloves garlic, minced 2 onions, chopped 2 tablespoons butter 3 cups vegetable broth 6 large potatoes, cubed salt and ground black pepper to taste ¼ cup evaporated milk ½ cup chopped fresh parsley, or to taste ½ cup corn kernels ½ cup shredded Cheddar cheese, or to taste