Can anyone suggest any easy to make, healthy food at home ?

[Wish upon a star]

I am a university student, i eat my main meals outside. But i feel hungry sometimes at odd times, so i need some recipes and suggestions for making healthy, easy to make stuff at home.(not canned food) Some thing which takes less than 15 minutes to cook, and is healthy and tasty andwhich can be eaten on a daily basis. Something like sandwiches , baked potatos, any suggestions?