If you have an Instant Pot, rice is incredibly easy. I've lately been using mine for all sorts of stuff - whole chickens, potatoes/sweet potatoes, all kinds of vegetables, beef roasts, home-made dog food (one of my dogs is old and dry food seems to hurt his teeth), and a ton of other stuff. I just do an Internet search for "instant pot sweet potatoes" (for example) and pick the best recipe.

My oldest daughter got the wife and me a meat-grinder attachment for my Kitchen-Aid stand mixer for Christmas this year and massively shortened the time it took us to add meat to my dog's food.

By the way - if anyone is interested in how to make dog food, look up Instant Pot dog food recipes. I have a food-safe 5 gallon bucket from Tractor Supply and a 2 foot paint/dry-wall mud mixer I use to put all the cooked stuff into and use my drill with the paint mixer to mix everything up, then bag the proper amount of food in small ziploc bags and freeze them. I end up making about 6 weeks of food for him at a time. I usually crush some of the dry food (my other dogs still eat it) and sprinkle some on top once I thaw a pack and heat it for about 45 seconds - just in case I'm missing some of the vitamins. I will use carrots, potatoes, sweet potatoes, pumpkin, green beans, peas (any dog-safe veggies I have on-hand at the time), and for meat I rotate between turkey, chicken, beef, salmon, venison, or anything else I have extras of. Just MAKE SURE you don't use things bad for dogs, like onions or garlic for example.