https://www.budgetbytes.com/ might tickle your fancy?
for me i’ve always had alot of congee lol which is like a rice soup/porridge, soak/wash rice and then throw it into the freezer into ice cube trays (the freezing of the water absorbed rice will shatter the rice grain) then boil that frozen waterlogged rice cube into your favourite broth. or you can skip the freezing process and use the instant pot porridge setting.
- i’ve found the easiest thing was canned chicken from costco, with some msg/chicken bouillon was the quickest broth that is my favourite. i prefer it thinned down (basically a thicker chicken soup), then you can throw toppings like veggies or bacon/eggs ontop
i guess you could follow the same process for lentils or even cut lentils into the rice soup for nutrition and stuff