What are some recipes you like to make that are perfect for a single meal that is a week or more's worth of groceries for you?

I have to look for a roommate or move to a less expensive apartment in 2 months. I'm happy to think about cooking new things and was wondering what are some recipes you like to make every few months that are perfect for a week or month's worth of groceries like rice or beans for you?<br>Or any ideas that I haven't considered would be greatly appreciated.