In a non stick pan, cook the beef until no more pink remains. Drain.
Butter, or use non stick spray of your choice, the inside of the slow cooker. Add the browned beef, corn, tomatoes, onion, green chilies, and taco seasoning.
Mix together, cover, and set to Low setting for 4-6 hours.
About 30 minutes before serving, cook the pasta in a pot of salted water until just tender, drain.
To the slow cooker, add the sour cream and drained pasta, mix everything together.
Sprinkle the Cheddar cheese over the top.
Cover and let cheese melt.
When the cheese has melted, serve and enjoy.