To Change it Up:Substitute a different type of cheese for some or all of the cheddar. My favorites are Parmesan, Asiago (usually combined with the cheddar), or subbing it all out for Smoked Gouda (this one is amazing!!!)Dress it Up:Add some crumbled and warmed pancetta. Also, call me a kid, but I'm a really big sucker for peas with my mac.For some fun spices, try adding a little hot sauce, cayenne pepper, and/or mustard powder.