I am trying to make sure that we have a few extra options for easy cooking/no cooking this winter compared to most winters. Our hob is gas, and with all the worries in the summer, I got a 1ring induction hob that I can plug into the wall as an alternative, and we also bought ourselves a smaller slow cooker (we had a massive one that needed a large volume so we almost never used it - we've already used the smaller one loads as it works much better for just DH and I!).
This is in addition to the PV solar panels we put on the roof last year (which is no help in an actual outtage but does reduce our bill), making sure we still had gas in the bottle for the gas BBQ (we've used that in the snow plenty of times before quite successfully, it's not just for summer), and my camping cooking options (1 ring suitcase gas stove, kelly kettle and mini charcoal BBQ with some coals) in the shed rather than in the storage unit with the rest of the camping gear. The gas BBQ and camping stuff I always have checked before winter, just in case.
In terms of actual food though, I have things I know we eat normally, just more of them. And a few more convenient options. So while I am very happy to make couscous for morroccan meals with a spoon of veg stock powder, spoon of cumin powder and a few other spices, handful of raisins etc added to plain couscous from the tub on a normal occasion, there are days we're so busy that the pre-packaged "Moroccan couscous" serving 2 people and just needing water works really well - no faff with measuring or finding bottles/jars in the dark etc and only needs boiling water to "cook".
We always have lots of tuna, corn, tomatoes, onions, garlic, pasta, rice, herbs & spices, baking ingredients etc. in my storecupboard. But as life has got more hectic in recent years, I have also got used to keeping a few jars of sauces that I just open and dump into the pot rather than making the sauce from scratch everytime - in a power outtage, that would be my go-to as needing less work in the dark/reduced light, less stress, and less heat/energy needed to cook down each stage. And I have a few packets of microwave rice (can't find the pasta versions in shops anymore) that only need to sit in some boiling water to reheat/finish cooking if no power to microwave, and very thin Chinese noodles that need far less cooking time too. Our big gas BBQ has lots of space and a lid, so we can cook in tinfoil trays/packages, on skewers, or just grill - but it means I can cook an entire meal in the BBQ including baking bread (dough I've made or part-baked rolls I've bought) or making pizza if I wanted. We often do lots of different things at the same time on it.
So really, it's essentially the same as every winter, just a little bit more than usual this year as between inflation rising and the increased likelihood of power outtages, I am trying to be sensibly ready.
Our freezer is pretty full at the moment - because I picked a lot of blackberries locally, DD had a good lot of strawberries that were going uneaten that I blitzed and froze for breakfast smoothies rather than letting them rot, and we've been too busy recently so planned meals were occasionally left undone in favour of fast meals or takeaways and those ingredients frozen. I have used up almost all of my bag of HM crumble mix (we've had a good few apple and blackberry crumbles recently - but that does include 2 single servings already made up and frozen with excess apples I'd peeled), and I am working through my current bag of HM breadcrumbs by adding roasted courgettes with crispy topping to the oven when it's on for other things.
But I keep a drawer full of various types of raw meat (some on offer, some yellow stickers, I always keep a bag of prawns to throw handfuls in to make a quick stirfry to use up odds and sods of veg etc), a few batch cooked meals or leftovers (small amounts of cauli cheese is great for lunches or solo dinners), any bits of stock I have made, etc. And a pack of burger bun-suitable rolls as I nearly always have some burgers (beef, turkey, salmon etc) frozen and that's handy for mid-week easy dinners without running to the shops for the buns. So it is all rotated relatively frequently.