I think steaming is the best way to process food ERE style and I am a strong supporter of switching from bread and other pastries to rice.
Steaming is both healthy and economical since it does not require any cooking oil, does not make food fatty, does not take vitamins and other nutritional content out of the food like boiling and it requires minimal amount of time to prepare food. Also the amount of electricity it spends is very low since you just need to sip some water which is heated up to boiling in a couple of minutes unlike using the oven or microwave.
Modern steamers are around 30 dollars and they make cooking very easy. You just put the food inside them (most have three levels), sip water in the conainer at the bottom, switch them on and set the program you like. You dont have to wait for it to finish, they can switch off automatically and/or keep warming the food.
Similar goes for rice cookers which are around 20 dollars and require just water and setting the program.
Rice is very cheap (10 kilos for around 15-20 dollars) and can be stored without problems for longer than a year. It satisfies nutritional needs in the same way at least if not better as bread and other pastry products. And you can have it fresh out of your cooker in 15-20 minutes unlike bread (baking takes longer and costs more).