01 -
Place uncooked pasta in the bottom of a 6-quart slow cooker. Distribute butter and cream cheese evenly over the pasta.
02 -
Sprinkle salt and cayenne pepper over the mixture. Pour in whole milk and heavy cream.
03 -
Stir to ensure the pasta is evenly coated in the dairy mixture. Smooth into a single layer.
04 -
Cover and cook on low for 1 to 2 hours until the pasta is al dente. Stir once halfway through cooking, ensuring the pasta remains in a single layer.
05 -
Sprinkle shredded cheddar and pepper jack cheese evenly over the pasta. Stir to mix thoroughly.
06 -
Cover and cook for an additional 10 minutes until the cheeses melt completely into the sauce.
07 -
Stir the finished mac and cheese before serving. Serve hot.