Refrigerated lunchboxes turn soggy When I steam vegetables or boil rice I leave it to cool off for a few hours and then put it into a plastic lunch box and then into the fridge. After a day the vegetables get very soggy with a pool of water at the bottom of the lunch box. The rice turns brittle and tastes like sand.

I don't have time to cook everyday, I try to get as much cooking done as possible on Sundays and store the result in the fridge.

I try to Google things about avoiding moisture or drying vegetables but this gives me unrelated results.

Can anyone give me advice for avoiding these problems?

Thank you very much.
From personal experience, rice doesn't refrigerate well; I tend to buy quick-cook rice that I can just microwave so it's fresh when I need it, but I hear that it freezes better, with less moisture loss. Perhaps the vegetables can be frozen as well? If you spread them out on a baking sheet when you freeze them, they should be easily portionable later, but I don't know which vegetables you're cooking or whether they are hardy enough for the freezer.