Slice the butter, cube the Velveeta, and shred the cheeses.
Bring a pot of water to a boil, stir in the chicken bouillon, then add the macaroni.
Boil the pasta until just before al dente.
Once the pasta is done boiling, strain it and run it under cold water to stop the cooking process.
Then preheat the oven to 350 degrees Fahrenheit.
in the same pot used to boil the pasta, whisk together the whole milk, evaporated milk, Cajun seasoning, cayenne pepper, garlic powder, onion powder, and kosher salt.
stir the cooked macaroni into the seasoned milk mixture until evenly coated.
Spoon about a quarter of the macaroni into the bottom of a 9-by-13 baking dish.
Layer in some of the sliced butter, cubed Velveeta, shredded pepper jack, and sharp cheddar. (See Notes)
Repeat those layers until everything is used.
Cover the top with shredded mild cheddar and mozzarella.
Bake at 350 degrees for about 40 minutes, or until hot and bubbling around the edges.
switch the oven to broil about 550 degrees or the low broil setting — and watch it closely. You’re looking for bubbling edges and a deep golden crust across the top.
Once it reaches your desired color, remove it from the oven and let it rest for at least 15 minutes before serving.