Add the water, milk, butter, ranch, and pasta to a large pot set over medium heat. Allow it to come to a nice simmer, stirring often, and cook just until the pasta's tender.
4 cups water, 1 cup milk, 1/4 cup butter, 1 pkt dry ranch seasoning, 1 lb short pasta
Turn off the heat and stir in the half and half, then add the cheese and continue stirring until it's completely melted and evenly incorporated. Stir in the chicken and 2 tbsp of seasoning.
1/2 cup half and half, 2 cups shredded cheddar cheese, 3 tbsp Frank's red hot original seasoning blend, 2 cups chopped rotisserie chicken
Transfer the cheesy pasta to a 9x13" casserole dish and spread it out in an even layer.
In a small bowl stir together the bread crumbs, melted butter, and remaining tablespoon of seasoning until evenly combined. Sprinkle the bread crumbs evenly out overtop of the casserole.
3/4 cup plain panko bread crumbs, 2 tbsp butter
Bake the dish at 325° for 20 minutes, until the dish has cooked through and the bread crumbs are nice and toasted.
Serve warm with a drizzle of ranch, if desired, and enjoy!