Using AI to meal plan for a family (my system)
Ok so after Marcus' nutrition posts made me realize my family's eating habits were basically "whatever the 6-year-old will agree to", I built a system using AI to fix our meal planning. Sharing because it might help other parents:
The prompt I use (weekly):
I tell ChatGPT: my family is 2 adults, 2 kids (ages 4 and 6). Husband likes spicy food. Kids hate anything green that isn't a pea. I need 5 dinners this week, each taking under 30 minutes, with at least 30g protein per adult serving. Budget: $150/week for dinners. Generate a meal plan and consolidated grocery list.
Key tricks:
- Be SPECIFIC about constraints. Vague prompts = useless results
- Tell it what your family ACTUALLY eats, not what you wish they'd eat
- Ask for the grocery list sorted by store section (game changer for shopping speed)
- Iterate: "swap Tuesday's meal for something with chicken" works great
Went from spending 45 min/week agonizing over meals to about 10 minutes of prompting + tweaking. Grocery bill actually went DOWN because I stopped impulse buying stuff we didn't use.
I know its not rocket science but it really helped us. Happy to share more specific prompts if anyone wants.
Sarah, this is EXACTLY how AI should be used for nutrition. The protein target per serving is the key piece most people miss. Most meal planning apps just optimize for calories or cuisine type — they don't think about macros at all.
One upgrade suggestion: ask it to calculate the approximate macros for each meal. ChatGPT is decent at this (not perfect, but close enough for planning purposes). That way you can see if you're hitting your protein targets for the whole day, not just dinner.
Oh my god Sarah I need this in my life. I'm cooking for myself, a teenager who only eats chicken nuggets and pizza, AND my dad who has dietary restrictions from his medication. Meal planning makes me want to cry on a good day.
Can you share the exact prompts you use? I'm gonna try this tonight. even if it only saves me 20 minutes a week thats 20 minutes I can spend not losing my mind
Lisa absolutely! Here's my go-to starter prompt — just fill in your specifics:
"I need a 5-day dinner meal plan for [describe your household and any dietary restrictions]. Constraints: [budget, time per meal, equipment you have]. Each meal should have [protein target]. My family likes [foods they eat] and dislikes [foods they won't eat]. Please include a consolidated grocery list sorted by store section (produce, dairy, meat, pantry)."
Then iterate from there. "Make Wednesday's meal simpler." "Add a vegetarian option." "What can I prep on Sunday to make weeknights faster?"
For your dad's medication restrictions, just list them in the prompt. ChatGPT is actually really good at avoiding food-drug interactions if you tell it what meds he's on.