Yeah, it’s a problem. Especially everything that involves any planning and preparing that goes beyond setting up the rice-cooker in advance. (I don’t eat rice that often, btw, because that’s hard enough. But when I do, I make rice for a couple of days.)
Right now, there’s a net of brussels sprouts on my desk. It’s been there since after breakfast to remind me of preparing them before the hunger kicks in and I move to the kitchen for a quick fix. I bought them over a week ago and that’s exactly how I haven’t eaten them yet. That and I had some rice left. I expect I’ll have them ready if not tonight, then tomorrow at worst.
In my book, brussels sprouts qualify as Fancy Food. As fancy as I get, in fact.
Apart from that, I’ve pretty much dumbed down my cooking to three and a half basic formulas:
Rice/noodles/potatoes/tofu plus a pan of vegetables plus maybe some (instant) sauce plus spices. Or, like tonight, steamed vegetables plus maybe some tofu thingy I can fry plus sauce plus spices. And, of course, salad: vegetables plus one of two sauces plus maybe some fried pumpkin seeds.
Within these formulas, you can switch up the actual ingredients any way you like (or can, depending on what’s available).
The half one, of course, is leftovers plus some new stuff to fill it up.
I don’t do recipes. I do algorithms.
I try to always keep the basics in the house. Enough to get some variety in.
Rice, noodles, potatoes, various tofu products, beans, tomatoes and peppers, trusted spices, five or six different kinds of instant sauces (although technically, I think, some of them are soups), whatever seasonal vegetables I can get but also several bags of pre-packaged frozen vegetable mixes because otherwise I’d end up with always the same vegetables. Plus, they just keep so much longer!
There are pretty good frozen and instant foods these days, especially if you don’t look for meals. With organic ingredients and not so heavy on the salt and artificial taste enhancers.
Of course, whenever I find other stuff that tickles my fancy, I’ll go for it. Like the Brussels sprouts. But I rely heavily on the standards.
I keep a checklist on my phone for shopping. Before going out, I browse the kitchen and uncheck everything that’s out. That way, I won’t forget to put stuff on the shopping list like I used to. Beware if you want to adapt that idea: I used to be on a tight budget, and a large part of my staying within the budget was due to stuff I forgot to buy! I was surprised to find how much more I’m spending now.