I haven't ever done a whole month before, but I regularly cook a weeks worth of food at a time. Some things I do:
Make breakfast 'hot pockets'- there are a lot of recipes out there and you can freeze them, just like a hot pocket, until you're ready to eat them
Pre-made breakfast smoothies in disposable cups- just microwave for a few seconds in the morning so they aren't frozen solid. I normally put protein powder and fruit in mine.
Rice can be frozen for use in a variety of dishes- I normally use Alton's Browns 'Baked Brown Rice' recipe and make at least 4c at a time.
A crock pot full of chili takes 30min to prepare and you can make TONS at a time with a large crock pot