Add the milk and macaroni to a medium saucepan and bring to a boil over medium heat, stirring frequently to keep the macaroni from clumping. Lower to a simmer and cook, stirring frequently, until the macaroni is tender and the milk has thickened to the consistency of heavy cream, 4 to 5 minutes. Stir in the kale and continue cooking until fully wilted, about 2 minutes.
Lower the heat, add the Cheddar, mozzarella, cream cheese and 1 1/2 teaspoons salt and stir until smooth, thick and creamy. Stir in the Creamy Parmesan Caesar Dressing. Remove from heat and top with the Parmesan, croutons and several grinds of black pepper. (The dish will thicken as it cools; thin it out with a little hot water if desired.)
Copyright 2018 Television Food Network, G.P. All rights reserved.