
I have had a rice cooker for many years now - in fact I am on my second one. In that time, a "Rice Cooker Casserole" has become my standby thing to do when tired, or busy, or just when I have smallish quantities of leftover scraps of cooked meat and vegetables in need of using up.
It's all very simple. Measure the dry rice and cooking liquids into the cooker pan in the normal ratio, then pile sliced/diced or frozen veggies, and / or diced leftover meat / ham or frozen cooked prawns and the like on top of the rice. Add some herbs / spices / seasonings, put on the lid and switch on. And forget about it for a bit.