First of all most children eat lunch at school that are on snap. We happen to send lunch with granddaughter because she goes to two schools.
Breakfast is a bowl of oatmeal, cooked from scratch in the microwace and a banana. The oatmeal costs .10 and a banana costs .12 for a quarter. - seven days is 1.75 - based on Costco prices. The dime was when oatmeal was ten dollars for ten pounds, It's now 8.00. Bananas are 1.39 for a three pound bag that many times is 3.5 pounds.
A breakfast English muffin with a fried or scrambelled egg would be about .21.
Lunch : Hummus and crackers and or veggie sticks, a piece of fruit. A bottle of water or herbal tea.
Snack - air popped popcorn.
Dinners are mapped out on other blogs. A cheese pizza from scratch is a dollar. You can add veggies and be well under.
Homemade soups are well under a dollar for several servings. Bread sticks are about a quarter for a full cookie sheet minus somemherbs.
All the dinners on my blog cost out to average less than five dollars for four people. Most less. It's when o add a fish or steak that is higher, but some more inexpensive meals average it out.
When I had teen boys, I always had certain foods that they knew they could eat all they wanted to if they were hungry, With my son it was beef and bean burritos , popcorn, peanut butter and jelly , and the veggie sticks in the fridge.
It's nit what you eat, as much as finding the RBP ( rock bottom price ) on the things you eat on a regular basis. Once you identify what those are, find who has the cheapest prices. Buy any non perishable staple item, onkymat a RBP and buy enough to last you until it goes on sale again, or to last you a specific amount of time, when the shelf gets low, start watching for a sale.
I have target process ( nothing to do with the store with the red balls ) if something costs more than my target price, I have to have it really bad and there isn't a substitution for it.
Use coupons, use a web site like Ibotta. Learn prices and develope recipes that use inexpensive sources of protein. We dont eat much steak, lobster, asparagus, .....
Meat : I try for two dollars a pound, I can get Foster farms for a dollar for whole chickens and 128 for split breasts. I de-bone the breast to make boneless, skinless chicken breast and cook the bones for stock and harvest the meat for tacos or a cassarole.
Ground beef for 7 percent fat is about 3.28 if it isn't and I can find any other piece of low fat beef, I grind our own - or,mrather, my husband does it, LOL.
Pork loin is about two dollars a pound on sale.
More information other posts.
Note I wrote this blog to help people eat healthy as they can on a foirmdollar a day budget. Many use it for hacks and ideas for a different dinner. I don't have ads because I just want to help.
Hope this helps.