@CodenameVillanelle it's not as if I have my feet up in another room waiting to be presented with a three course meal (I wish
)
She chooses a meal to cook (within reason), we put it on the meal plan, check the ingredients and add anything to the shopping list.
She peels and cuts any vegetables required, gets the protein ready (usually just opening the pack, frankly, but she might put some marinade on, or cut it up into chunks, or thread meat into skewers).
She puts things into the oven, with heat gloves; I take things out. She can put frozen veg in water into the microwave; I take it out.
She cooks pasta or noodles or sauces on the stove top, supervised. If a sauce sticks, or the pan boils over, I help out. She uses the stick blender under supervision. She mashes vegetables. She uses the rice cooker for rice. She can open tins, under supervision.
None of those skills by themselves are that hard. Coordinating it needs help.
I have to cook anyway. This way I don't have to choose two meals a week, which is the most tedious part. They get 121 time and they eat more interesting things. They love doing it, and while it's a bit slower than doing it myself it still gets done. I work full time but I acknowledge I have the luxury of being able to carve out time for this 2 days a week - it wouldn't work if noone was in the door before half 6.
Mumsnet has endless posts from people bored by meal planning, and posts by people wanting really quick and nutritious meals that can be whipped up without much effort. I solve the former in my house by using the latter with my kids.