Great response, Boule de feu. You covered most of my strategies, and then some.
These days, 5 minutes of prep is about my limit. But some days I can do more by spreading it out over the course of the day. Five minutes, rest for an hour, another 5 minutes, etc. That way I can get some chopping done early.
I like to get those bags of frozen tilapia that have the individual wrapped filets. You can just thaw (and that takes about 15 minutes) and saute in a bit of olive oil. I usually season them with Blackened Catfish Magic. Sometimes, if I have a little more energy, I coat them with seasoned bread crumbs.
You can buy frozen brown rice that you just heat in the microwave. Or you can make a big pot and freeze it in dinner-sized containers. You can do the same thing with other whole grains, like quinoa or spelt. Whole-wheat couscous takes almost no prep: put it in a container, add hot water, cover and let it sit for 5 minutes and fluff with a fork. Easier than Stovetop Stuffing (which I've been known to use), but as boring as naked spaghetti: serve it under something or sauced. Bulgur and whole-wheat orzo are almost that easy: I simmer them in broth for extra flavor.
Lentil soup and split pea soup take very little prep. Again, I do the chopping (onions, carrots, and celery) a little bit at a time, earlier in the day or even the day before. Then it only takes 5 minutes to assemble and leave it to cook.
There are a lot of Crockpot recipes that are basically dump recipes: dump it in and let it cook. Like put in a bunch of chicken pieces and a jar of salsa. Or a chunk of beef round and a packet or two of Good Seasons dry Italian dressing. Or chicken with Dijon mustard, soysauce, pineapple, and garlic. Or pork with barbeque sauce. Make a pot roast by dumping in a can of Coke (okay, it's not exactly health food) and a packet of onion soup mix, with beef, carrots, and potatoes. If you use those peeled baby carrots and baby potatoes, there's no chopping.
I use some of those flavored rice (or other grain) mixes. Cook 'em up (20-30 minutes, essentially no prep) and add cooked chicken, ham, kielbasa, or shrimp. Speaking of kielbasa, dump it in boiling water along with baby carrots and potatoes, then cabbage wedges at the end. Same for corned beef, except that you have to simmer for an hour or two before you add the veggies.
For veggies, baby carrots and pre-cut, pre-washed bagged stuff. Prewashed salad mix. Zucchini, crookneck, and broccoli require very little prep: a quick slice and then steam, and you can get them ready for the pot early in the day. And I use a lot of frozen veggies.
Actually, a roast pork loin is supprisingly easy. I do trim off the extra fat, but then I just rub the outside with garlic paste (from a jar) and soy sauce, and stick it in the oven. No more work 'til it's done, especially if you put some potatoes in to bake, too.
And here's a recipe for Taco Soup you can teach your family to make:
1 lg onion, chopped
1 envelope taco seasoning mix
2 cups whole kernel corn, frozen
1 can chicken broth
1 can black beans, undrained
1 can white beans, undrained
1 can refried beans
1 can diced tomatoes, (Mexican flavor, like Rotel)
1 can diced tomatoes, (any flavor)
Saute onions to soften. Add all other ingredients. Stir until the refried beans are mixed in. Simmer, covered, about 45 minutes.
It freezes well, too.
I try to do a lot of cooking ahead and freezing. Like Boule, I cook double batches and freeze ahead whenever I can. Because sometimes even the easiest prep is too much for me. Then it's nice to have something to heat-n-eat in the freezer.