I make my dauphinoise with low fat crème fraiche and no cheese. It's very edible and so much better for you.
Until recently, when I had a houseful of 8 (some full, some part time) I couldn't batch cook at all as I was standing over a cauldron every day. Now most have moved out, when I cook a meal, I cook enough to freeze half. So I'm building up a few meals for the days we want to go and do something (bet the freezer breaks!). Just get a meal out the night before and put in the fridge. Lasagne, stew, chilli and so on. I do batch cook vegetarian for my son though. I usually allocate a day and I make his nut roasts, burgers, veg chilli, curries. And I make cakes for my husband, cut them in half and freeze them. Carrot/apple/fruit/ginger cakes.
If you hate cooking though, why do it. Cook do good meals (I'm not a fan as I find them a bit salty but I am a salt hater). Or M&S ready meals. Or don't worry too much and find some recipes for healthy easy meals that take barely any cooking. Big salads, wraps. If you stir fry chicken with a bit of 5 spice and put in a wrap with spring onions, cucumber and a splodge of hoisin sauce, delicious. Serve with some rice, maybe some prawn crackers if you're not watching your waistline.
Experiment with salads. I love to put apples in my soy sauce salads, and oranges in my balsamic ones. You can keep tubs of low fat greek yoghurt in the fridge, chop up some apricots, mint, lemon juice, toast some pine nuts and you have a delicious dip you could have with fried halloumi and pitta, or lamb steaks.
I enjoy cooking so I love to experiment but if you hate it. avoid it as much as possible and keep it healthy and simple.
Mary Berry's Harissa lamb is a favourite in this house if you want to make a batch of that. It has beans you put in at the end but you could add those when you are reheating after defrosting.
Lovely with couscous with spring onions/preserved lemons/fresh chilli/coriander stirred in.
I'm drooling! Must go!