Cook Elbow macaroni according to package instructions. Drain and set aside.
Pre-heat your oven to 350˚
Put 1-1/2 Cups of Flamin' Hot Cheetos into your food processor and pulse until you have crumbs. Add the Cheetos crumbs into your milk and set aside.
In a large pot melt 2 Tbsp. of butter, once melted whisk in your flour, add salt, pepper and cayenne to taste. Allow to cook for about 1 minute.
Whisk in Cheetos flavored milk and bring to a simmer, allow to cook for about 5 minutes until it thickens up.
Add in all of your cheeses, mix together until melted and completely combined.
Add in cooked pasta, mix until pasta is completely coated. Place in a baking dish and place in the preheated oven for about 15 minutes.
In a pan skillet melt down 2 more Tbsp. of butter. While the butter is melting pules the rest of your Cheetos in the food processor. Add Cheetos crumbs to the melted butter and allot to cook for a minute or two.
Once Mac N' Cheese is done cooking sprinkle Cheetos crumble over the top and serve.