I always have some frozen food and pantry stuff that's microwaveable. In addition, I keep frozen vegetables and bouillon cubes on hand, so I can make soup. There is also cereal and I keep frozen fruit and almond milk for smoothies.
I just recently tried a dehydrated peanut butter, pb2, where most of the oil is extracted, making it lower in fat and calories. Since it's in powder form, it'd be easy to reconstitute some if I didn't have the aforementioned other foods in the house.

It seems to me that when you claim you have nothing, you're not being creative enough.