Ramen.

If you've been to college in the past couple of decades, you're certain to know what ramen noodles are. Like spaghetti but coiled up and longer, it usually comes with little flavor packets. Needs a smaller pot to boil in than spaghetti as well. It's surprisingly nutritious, and it's cheap.

Ramen is also an amazingly boring meal, if you have to eat it day after day. Luckily, it is very easy to spice up. Add meat to taste.