AI-Assisted Meal Planning

Lifestyle > Cooking

It's April of 2026 and I feel like my cooking habits have not changed much in the past few years. I feel that meal planning/prepping is an underdeveloped area in my life right now. I often find myself scrambling to make last-minute meals because I don't have anything prepped. I have common staple meals that I rely on and often do make large batches of them which last for several days -- but I go in cycles of feeling like I'm doing a good job with this, and then drift off into bad habits of not having things prepared.

The last time I was really thinking hard about it, I worked on a project that I thought might help me to do better -- GPT Meal Planner. It didn't get me very far (more my fault than the tech's fault).

This has again been nagging at me a little bit lately. It feels like I should be doing better. I feel that I often don't devote enough time to work on this area.

I vaguely know and understand how to make improvement in this area: Take some time to think through what meals I want to be eating for the week; take some time on the weekend (or whenever) to do some basic prep of ingredients so that I have bases to work with for weeknight assembly into meals. I sometimes do these things, but I don't have a consistent plan or proven routine that I know I can follow to make sure I'm doing these things.

And I'm not even proposing a plan/routine here necessarily. Though, it could be adapted into one.

The first step right now for me? Offloading some of the thinking into AI. Literally I mean getting help from ChatGPT. AI is pretty good at general purpose, common-sense activities/planning.


Here's an example of what I'm saying. In fact this is just my real input I am trying this with right now.

First I roughly listed what significant food items were already in my fridge and pantry. Then I prompted to help me with a meal prep plan for the week which would incorporate what I already had, with additional items I should grab from the store.

My prompt:

Answer:

Do I expect to follow this exactly? No, definitely not. Also this week I'm failing because I am already behind on listening to what it told me to prep. But I like what it's telling me. I like the ideas that it's giving, and the habits I could develop from this. Some of it is obvious. Yes, I know that to prep, I should roast vegetables and tofu. But it's helping to fill in some gaps - certain ingredients to buy that I normally wouldn't think to unless a specific recipe called for (cilantro, green onions). It just feels helpful to have some instructions given to me.

Obviously I have to give this a try. But it's something. The real work has to come from me, of course. But AI can give some scaffolding to support me while learning how to do better.

Commentary after a week or kind of following the generated plan

(5/7/2026)
Trying a slightly fancier setup, with my local Obsidian vault (private notes, not this public digital garden). Multi-paged approach, using Codex for LLM.
Files:

I haven't filled out "recipes to try" or "types of food I like" yet. Recipes one would ideally be a growing list I add to whenever I come across something I want to try. Ideally I would also mark a recipe as tried/enjoyed/disliked, at the very least for my own tracking.

This is my base prompt. I've been fiddling with it and chatting with Codex about how to improve it (based on what it generated) and Codex has been adding some more notes as an addendum to my base prompt, but a) it's verbose so I don't feel like putting the whole thing here, and b) I'm still not too happy with it, so maybe will wait till/if I have a version I like better.


Update May 31 2026:
Basically every weekend, I think about this process for a little bit because I get into a mode of "I should prep some food for the week". It's good that I'm starting to get into the habit of thinking like this. In the past I push this thinking off to during the week, which is when I (in theory) have less thinking time (assuming I am busy and don't just have free evenings) and which causes me to scramble a lot.

So I've been playing around using Codex and ChatGPT to help me come up with a good prompt (my "AI_INSTRUCTIONS" file) which will make me a good process/plan/system for helping me to meal prep.

I had a pretty productive discussion with ChatGPT. I had previously generated a new set of instructions using codex, but I wasn't liking the outputs it was giving. It would make a lot of mish-mash weird ingredient combinations and would repeat a lot of items and they just didn't feel like good plans.

So I asked ChatGPT to outsource its knowledge:

What is a useful output for AI to generate a plan based on these instructions? Come up with three vastly different approaches to this, based on real coach/plan guidance from internet.

I think asking it to base its answer on plans from other sources helped it to come up with a better set of instructions. It referred to these sources which seem to have pretty good advice:

The core change from the earlier prompt is that it's instructing on the creation of a system rather than just a list of meals. It accounts for selecting a couple "flavor lanes" for the week, then prepping base components, and allowing for flexibility in different styles of using those base components. This feels closer to what an ideal prep system should look like.

This is the AI prompt it made for me (it's quite verbose but I guess it doesn't hurt to have it here. Had to add ">" to the start of each line so it would stay in the collapsible section.)

And I had it generate a plan after I voice recorded my current fridge+pantry stock as base inventory. It seems like a somewhat decent plan so far (not like an amazing plan, but a somewhat decent plan). Likely to loosely follow it.

Something I want to keep an eye on is making sure it gets me prepping the right kinds of vegetables and greens so I fit those in for hitting the Greger Daily Dozen. The first plan it outputted did refer to those ingredients (cruciferous vegetables and greens) but, for example, there wasn't a prep step for cooking a certain type of greens which I wish it did because I am not great at knowing how to prep greens. Of course, I didn't explicitly mention this anywhere at all, so maybe I should in the future.


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