Guide
How much money you actually save cooking at home.
The honest answer is that it depends on what you are replacing, and that anyone quoting you one national number is guessing. But two things are structurally true and both are moving in the same direction: restaurant prices have risen faster than grocery prices for most of the last two decades, and Americans now spend more of their food budget away from home than at it. The fastest-inflating half of the food budget is the half you have the least control over. This page is about taking some of it back — and about the fact that the same lever moves your health.
The numbers
What is actually happening to food prices.
Grocery inflation gets the headlines because it is the number you feel weekly, at a register, in front of a total. But the more useful comparison is the one between the two halves of a food budget, and it has been lopsided for a long time.
3.5%
Forecast 2026 rise in restaurant prices
USDA ERS, July 2026
2.7%
Forecast 2026 rise in grocery prices
USDA ERS, July 2026
58.9%
Share of US food spending that goes to food away from home — the highest on record
USDA ERS Food Expenditure Series, 2024
$2,913
Food a household of four throws away each year
US EPA, 2025
The USDA's July 2026 forecast puts restaurant prices up 3.5 percent this year against 2.7 percent for groceries. That is not a one-year quirk: in 2025 it was 3.8 against 2.3 percent, and across the last twenty years restaurant prices have averaged 3.5 percent a year against 2.6 percent for groceries, because a restaurant bill is more labor and rent than food, and labor and rent do not get cheaper. The pattern holds in most years, not all — 2022 flipped it hard, groceries up 11.4 percent against 7.7 percent for restaurants — but it has reasserted itself every time since. The BLS has the same gap in the year to June 2026: 3.4 percent for food away from home, 2.7 percent for food at home.
Set against that, the USDA's Food Expenditure Series shows food away from home reaching 58.9 percent of total US food spending in 2024, the highest share on record. So the average household has been steadily shifting its money toward the half of the food budget that inflates fastest. That is the arbitrage, stated plainly. Every meal moved from the right column to the left is bought at the slower-rising price.
Intent has started to catch up: in a Popmenu survey of 1,000 US adults fielded in February 2026, 68 percent said they planned to cut back on restaurant dining this year and prioritize affordability. Whether that shows up in next year's spending data is a different question — this is a category where stated intent and actual behavior have parted ways before.
Where the money goes
Three leaks — and one that is not about money.
Most advice about saving money on food goes after the grocery bill itself: coupons, store brands, unit prices. That is the place where the effort is highest and the savings are smallest. These are where the money actually goes.
The trash
This is the one nobody counts, because it never appears as a line on a receipt and it is the only one that buys you nothing at all. The EPA's 2025 estimate, built on 2023 retail prices, puts consumer food waste at $728 per person per year — $2,913 for a household of four, more than 11 percent of that household's entire food budget. Very little of it is spoilage you could not have prevented. It is the bag of spinach bought for a meal that never happened, the half bunch of cilantro a recipe needed a tablespoon of, the ambitious vegetables. Buying food you do not eat is the most expensive thing a household does with food.
The fix: buy against decided meals rather than against intentions, and cook one meal a week out of what is already in the house.
The markup on someone else's labor
When you buy a cooked meal you are buying ingredients plus kitchen labor, plus rent on the room the kitchen sits in, plus service. Delivery stacks another layer on top: menu prices are frequently marked up before the delivery fee, the service fee and the tip are added, so the gap between ingredient cost and door cost is widest exactly where it is most convenient. That margin is not a rip-off, it is what those things genuinely cost. It is simply the part you decline to pay when you cook.
The fix: target the expensive end. Replacing a $40 delivery order matters far more than replacing a $6 sandwich.
The unplanned grocery run
A grocery run without a plan buys twice: once for the vague idea of a week's cooking, and again three days later when nothing in the fridge adds up to a meal. It is also where duplicates come from, the third jar of cumin and the second bag of onions, because nobody can hold the contents of their own cabinets in their head at the far end of a grocery store.
The fix: one list, built from meals already chosen, checked against what you already own before you leave.
And the one that is not about money
The 6pm decision. Nobody orders delivery because they priced it out and it won. They order because it is six-fifteen, nothing is thawed, and the decision is one more than they have left in them. In Instacart's September 2025 survey of 1,011 US adults, 20 percent said lack of time was what kept them from cooking more and 19 percent said they were too tired after work. Only 7 percent said they lacked the skill. The barrier is not knowing how to cook. It is having to decide.
The fix: make the decision once, on a day you have the capacity, for a night when you will not.
The health side
The same lever, pulled once.
The reason these two goals belong on one page is that they are not two habits. They are one habit with two payoffs, and the evidence for the second is better than most people assume.
Start with the number that reframes everything else. CDC data covering August 2021 to August 2023 found that 55 percent of all calories Americans eat come from ultra-processed foods — 53.0 percent for adults, 61.9 percent for children and teenagers. Whatever you make of the debate about which ultra-processed foods matter most, cooking is the most direct lever any individual has on that share, because the alternative to a formulation is an ingredient.
On salt, the gap between home and away is measurable and consistent. Analyzing NHANES data from 2007 to 2010 — still the most recent comparison the USDA publishes on this — it found food prepared away from home carries 1,879mg of sodium per 1,000 calories, against 1,552mg for food prepared at home. Both are above the roughly 1,100mg per 1,000 calories that the guidelines imply, which is worth sitting with: cooking at home does not get you under the line by itself, it just gets you meaningfully closer, and it gives you the salt shaker.
On the whole diet, the clearest study remains Wolfson and Bleich's 2015 analysis of more than 9,000 adults, on that same 2007–10 NHANES data. People who cooked dinner six or seven nights a week ate around 2,164 calories, 81g of fat and 119g of sugar on an average day. People who cooked once a week or less ate 2,301 calories, 84g of fat and 135g of sugar. The calorie gap is modest; the sugar gap is not, at roughly 12 percent. Notably, the association held whether or not people were trying to lose weight — the cooking was doing something on its own.
And planning specifically, not just cooking, carries its own signal. A study of 40,554 French adults found that people who planned meals had higher overall diet quality, ate a wider variety of foods, and had lower odds of obesity. That is the same single habit that shortens the shopping list and keeps food out of the trash.
The honest caveat, which is usually left off pages like this one: these are associations, not proof of cause. People who cook six nights a week differ from people who cook once in income, time, household structure and a dozen other things that also affect diet. The direction of the evidence is consistent and it is worth acting on. It is not the same as a controlled trial, and we are not going to pretend it is.
The playbook
Eight tactics that survive week three.
Ordered roughly by how much they are worth, and biased toward the ones that still work when you are tired — because that is the only test that matters. A tactic that requires a good week is not a tactic.
Decide the week before you shop, not at 6pm
The expensive decision is not the groceries, it is the one you make at six o'clock with nothing thawed. Time and tiredness are what keep people from cooking, not a lack of skill, which means the fix is not learning to cook faster. It is not having to decide at the hour you are least able to. Deciding on Sunday what Wednesday looks like moves the choice to the one hour of the week you actually have the capacity to make it, and takeout stops being the path of least resistance on the night you are least able to resist.
Shop from the plan, once
A list built from meals you have committed to is shorter than a list built from vibes in aisle four, and a shorter list is a cheaper one. It also attacks the leak that buys you nothing at all: the EPA puts household food waste at $728 per person per year, $2,913 for a household of four, which is more than 11 percent of what that household spends on food. Almost none of that is spoilage you could not help. It is ingredients bought for a meal that never got cooked.
Build the week on two or three cheap backbones
Dried lentils and beans, eggs, chicken thighs, canned fish, tofu, a bag of rice. Pick two or three for the week and vary what goes on top of them rather than starting from scratch every night. Cost per gram of protein is where a food budget is genuinely won or lost, and the ingredients that win it are the boring ones. This is also the tactic that survives a bad week, because none of it is fragile.
Cook once, eat three times, but change the finish
Batch the base, not the finished meal. A pot of beans, a sheet pan of roasted vegetables, a pound of browned ground beef: one cook, three dinners that do not taste like leftovers because the last five minutes are different each time. Leftover fatigue is the reason batch cooking usually collapses by Wednesday, and varying the finish rather than the base is what fixes it.
Cook for the number of people actually eating
Recipes are written for four. If you are two, cooking four servings means eating the same dish twice or scraping half of it into the trash, and the trash is the expensive option. Scale the recipe before you write the shopping list, not after you have already bought for four. Halving 1½ teaspoons in your head at the counter is exactly the kind of small friction that ends with a delivery app open.
Shop your own kitchen first
Before the list gets written, look in the fridge, the freezer, and the back of the pantry. Most households are carrying the better part of a week in half-used ingredients they have forgotten owning. Build one meal a week around what is already in the house and you have cut both the grocery bill and the waste with the same move.
Use the freezer as a pause button, not a graveyard
Freeze the thing you are not going to get to on the day you realize you are not going to get to it, rather than the day before it turns. Label it with what it is and when it went in. A freezer full of unlabeled mystery containers is not a saving, it is the trash with an extra step and a delay.
Replace the one meal you buy most, not every meal
Do not try to cook everything. Find the meal you actually buy most often, the weekday lunch, the Friday dinner, the thing you order when a meeting runs late, and replace only that one. One bought meal a week turned into a cooked one compounds quietly for years. A total overhaul lasts about nine days and then you are back where you started, with a fridge full of ambitious vegetables going soft.
Price and waste figures are from the USDA Economic Research Service Food Price Outlook and Food Expenditure Series, the US Bureau of Labor Statistics CPI, and the US EPA's 2025 estimate of consumer food waste. Health figures are from CDC/NCHS data on ultra-processed food intake, USDA analysis of NHANES sodium density, Wolfson and Bleich in Public Health Nutrition, and Ducrot et al. in the International Journal of Behavioral Nutrition and Physical Activity. Barrier figures are from Instacart's September 2025 survey of 1,011 US adults, fielded through SurveyMonkey Audience. Last verified August 2026; if a figure here has gone stale, tell us and we will update it.
Where a tool helps, and where it does not
Prep Slate will not tell you what you saved.
It does not track prices, cost your recipes, or produce a number at the end of the month, and we are not going to build that just to have a figure to put on this page. What it does is remove the specific friction that makes people quit in week three: decide the week on a planner, scale each recipe to the people actually eating before you shop, push those recipes onto one shopping list that combines duplicates by unit and sorts into aisles, then cook from a mode that keeps the screen awake and holds your place. Of the eight tactics above, the ones that fail first are the ones that need admin. That is the part a tool can carry.
How much money do you actually save by cooking at home?
Honestly, it depends entirely on what you are replacing, and anyone quoting you a single national number is guessing. Replacing a $40 delivery order with a $12 pot of something saves far more than replacing a $6 deli sandwich. The reliable way to know your number is to work it out for one week: add up what you spent on food away from home, then price out the same number of meals from your own shopping list. What is structurally true, rather than anecdotally true, is that restaurant prices have risen faster than grocery prices for most of the last two decades — USDA forecasts 3.5 percent for restaurants against 2.7 percent for groceries in 2026, after 3.8 against 2.3 percent in 2025 — so in most years the gap you are working against gets a little wider.
Is cooking at home always cheaper than eating out?
No, and it is worth saying so. A cheap fast-food meal can beat a home-cooked one on pure cash cost, especially for one person, especially if the recipe calls for a spice or a condiment you have to buy whole and use a teaspoon of. Cooking for one is genuinely harder to make cheap than cooking for four. Where home cooking wins reliably is the middle and upper end of eating out — restaurant meals, and above all delivery, where you are paying for kitchen labor, rent, service fees, and a tip on top of the food. Cooking also only saves money if you actually eat what you bought. A planned week of cheap ingredients that ends in the trash is more expensive than takeout.
Is home cooking actually healthier, or is that just an assumption?
There is real evidence, though it is associational rather than proof of cause. Wolfson and Bleich's 2015 analysis of NHANES data from more than 9,000 adults found people who cooked dinner six or seven nights a week ate about 2,164 calories, 81g of fat and 119g of sugar on an average day, against 2,301 calories, 84g of fat and 135g of sugar for those cooking once a week or less. Restaurant and other away-from-home food is also markedly saltier in the same data: 1,879mg of sodium per 1,000 calories against 1,552mg for food prepared at home, both against a guideline of roughly 1,100mg. And CDC data for August 2021 to August 2023 puts 55 percent of all calories Americans eat as ultra-processed. Cooking is simply the most direct lever anyone has on that share. The honest caveat: people who cook more differ from people who cook less in other ways too, so treat these as strong signals rather than settled causation.
What is the single change that saves the most money?
Deciding the week before you shop. It is unglamorous, and it is the one that makes the others possible: the list gets shorter, the waste drops, the ingredients get used twice, and the 6pm decision that ends in a delivery app is already made. A study of more than 40,000 French adults found people who plan meals had better overall diet quality, more variety in what they ate, and lower odds of obesity — the same single habit sitting underneath both the money and the health side of this.
A note from
the maker
I am a home cook, not a chef. I cook most nights, I save recipes from all over, and for years I used the same apps everyone else does. They were good apps. I just had opinions.
I wanted the screen to stay lit at step three, with chicken on my hands. I wanted to check the ingredients without losing my place. I wanted to double a recipe without being handed two-thirds of an egg. None of that is a knock on anyone else's cook mode. I just knew exactly how I wanted mine to work, and I wanted it to be beautiful.
So I built the tool I wanted on the counter: one that stays out of the way while you cook. The screen stays lit. Your place is saved. The math is the math a cook would actually do. And your recipes are yours to take with you, always, even if you leave.
That is the whole idea. If it earns a place next to your stove, it has done its job.
Mark
Home cook, maker of Prep Slate
Start with one week.
Fourteen days free. Plan four dinners, shop once, and see what the fridge looks like on Sunday.