– 2 large carrots, cut into slices – 1½ teaspoon of salt, (or more to taste), divided – 2 medium-sized heads of cauliflower, separated into florets – 2 tablespoons of butter, divided – 2 large red onions, cut into cubes – 4 clove garlic, sliced thinly – 3 tablespoons of all-purpose flour – 2 cups skim milk – 2 tablespoons of parsley, minced – ¼ cup of grated parmesan cheese – 2 cups shredded cheddar cheese, divided – ¼ teaspoon of black pepper