Meal plan for one person: a week without waste

Why planning for one is different

In the United States, the Census Bureau counted 39.7 million one-person households in 2025, 29% of all households, up from 20% in 1975 (Census Bureau, December 2, 2025). Many recipes we see are written for several servings.

That mismatch may add to waste. In a 2013 study of 68 households in Southwestern Ontario, household size was negatively correlated with the amount of organic waste per person (p = 0.001), which led the authors to suggest that economies of scale may exist in household waste (Parizeau, von Massow and Martin, Waste Management, 2015). It is a small, local study, and it shows a link, not a cause. But it matches what cooks for one report: ingredients come in sizes made for bigger households.

Extension services have given the same advice for years. The University of Illinois Extension's handout for people cooking for one or two says the key is planning, and lists "cook once, eat twice" and "try to buy only the amount of food you will eat in a week" (Cooking for One or Two). An Iowa State Extension writer describes eating each batch the day she cooks it and once more later in the week (Meal Planning for One, March 24, 2025). We took those two ideas and put numbers on them.

The test: seven dinners, four recipes

We wanted a week that looks real: a chicken dinner, a pasta, an egg dish and a bean bowl. Three recipes serve two and are eaten on consecutive days, and the fourth serves one. That gives seven dinners and four cooking sessions. Here is what one serving of each comes to, estimated from USDA values:

Together the seven dinners come to about 3,100 estimated calories, an average of roughly 440 per dinner. These are dinners, not whole days. Recipe B is light on protein on purpose, and you would pair it with a higher-protein breakfast and lunch. Our guide to how much protein per meal explains how to spread a target across a day, and how much protein you need per day explains how to set it.

The raw quantities below are what the shopping list is built from. Salt, pepper and dried spices are left out, since they add almost nothing to the totals.

• A. Stir-fry, serves 2: 300 g chicken breast, 300 g broccoli, 1 medium red bell pepper (119 g), 100 g dry white rice, 13.5 g olive oil, 2 garlic cloves (6 g), 16 g soy sauce.
• B. Pasta, serves 2: 112 g dry whole-wheat spaghetti, 242 g crushed tomatoes, 126.5 g drained chickpeas (half a can), 90 g spinach, 1 medium onion (110 g), 2 garlic cloves (6 g), 9 g olive oil, 10 g grated Parmesan.
• C. Baked eggs, serves 2: 4 large eggs (200 g), 242 g crushed tomatoes, 133 g drained kidney beans (half a can), 1 medium onion (110 g), 1 medium red bell pepper (119 g), 60 g spinach, 4.5 g olive oil, 1 garlic clove (3 g).
• D. Bean bowl, serves 1: 126.5 g drained chickpeas (the other half of the can), 133 g drained kidney beans (the other half of that can), 40 g dry white rice, 60 g spinach, 170 g nonfat plain Greek yogurt (one container), 1 garlic clove (3 g).

The week, day by day

Cook on four evenings and the other three are reheat-and-eat. Every leftover is eaten the day after it is cooked, inside the 3-to-4-day window below.

Penn State Extension's leftover guidance says cooked turkey, side dishes and gravy can be refrigerated for 3 to 4 days (we applied the same window to our dishes), that turkey, stuffing and gravy left at room temperature longer than two hours should be discarded (we applied the same two-hour rule to ours; extending the guidance to other dishes is our assumption), and that leftovers should be reheated to an internal temperature of 165°F (Penn State Extension, updated October 6, 2025). Putting the second serving into its own container as soon as the dish is cooked, rather than after dinner, keeps you inside the two-hour limit. If the week changes, freeze any serving you will not eat within 3 to 4 days.

Why a list built recipe by recipe goes wrong

Add up the ingredient lines of the four recipes and you get 29. Written one recipe after another, the list asks you for olive oil three times, garlic four times, spinach three times and crushed tomatoes twice. Merge them and the same week needs 16 items.

Look at the two cans. Each is called for as half a can in two different recipes. If you read one recipe at a time, you would see "half a can" twice and might open two cans of each. Added up, it is exactly one can of chickpeas and one of kidney beans, and nothing is left. The yogurt works the same way: USDA lists a container at 170 g, so recipe D is sized to use the whole container.

The leftover test: what a swap does

The overlap is the point of the plan, so we tested what happens without it. Say Sunday's bean bowl is replaced by a dinner out or any dish that uses none of the shared ingredients. Everything else on the list stays the same. Here is what is left unused, using USDA weights and energy values:

The plan as composed finishes the beans, the yogurt and nearly all the spinach: only the end of the spinach (about a quarter of the package) is left. The crushed tomatoes are the exception. Recipes B and C need 484 g together, which does not match a can size, so about 310 g of a 28 oz can is left; freeze it in a small container or use it in a soup or sauce. Swap out one dinner and two half-opened cans of beans and more spinach are left in the fridge on top of the tomatoes, about four times the estimated energy of the first case (about 471 calories against about 116). This is arithmetic on one composed week, not a measurement of anyone's kitchen, and half a can is not wasted if you do something with it. But it shows where waste starts: at the recipe that was supposed to finish the can.

The fix is a rule, not a recipe. When a plan opens a can or a package, check that a second recipe in the same week closes it. If not, either swap a dish for one that does, or move the leftover straight to the freezer when you open it. The 74 g of spinach left at the end of the week is a small job: add it to Sunday's bowl, or freeze it.

The method, in five steps

These are the steps we followed, and the order matters.

• Pick three or four recipes and cook each for two. Cooking costs time and dishes once, however many servings you make. A fourth recipe for one fills the gap.
• Choose recipes that share an ingredient. Look for the half-can and the half-package: beans, tomatoes, spinach, yogurt, onions. If an ingredient appears in only one recipe, make it something that comes in small units, like eggs or fresh pasta.
• Write every ingredient with a weight and merge. "1 can", "2 cups" and "90 g" cannot be added together. USDA FoodData Central gives portion weights, for example 110 g for a medium onion and 3 g for a clove of garlic. Our weekly grocery list guide walks through the merge with five dinners for two.
• Round up to whole units, then check the leftovers. If the total needs half a can more than you buy, look for a second recipe that uses it.
• Check the kitchen last. Cross off what you own after the merge, so you check olive oil once, not three times.

If you prefer to prepare food ahead on one day, the meal prep guide covers storage and containers, and how to meal plan for the week shows a 21-slot template.

Common mistakes when cooking for one

Four slips are easy to make.

• Halving a recipe for four and ending up with odd amounts. Half an egg, a third of a can. It is simpler to cook for two and eat twice, which is what the plan above does.
• Planning seven different recipes. Seven recipes with no overlap means seven sets of ingredients and a fridge full of partial packages. Four recipes with shared ingredients is easier to buy and use up.
• Leaving leftovers on the counter. Penn State Extension's guidance is to discard cooked turkey, stuffing and gravy left out longer than two hours; we applied the same limit to our dishes. Portion the second serving as soon as it is cooked.
• Letting a leftover run past day four. If you will not eat it within 3 to 4 days, freeze it on the day you cook it.

A plan only organizes your shopping and cooking. If you have an allergy, a medical condition or specific nutrition needs, ask a doctor or a registered dietitian before you build a plan around a recipe, and check the labels on packaged items yourself.

Let an app do the merge

Doing this by hand takes a spreadsheet, a food database and a calculator, and it has to be redone when a dinner changes. MacroRecipe plans your week of menus around your macros and the goal you choose, with the grocery list. It works from the dishes you pick, with ingredient data from USDA and CIQUAL (ANSES), sizing portions so each day lands near your estimated calorie and protein targets. Swap a dish and the portions and the list follow, with quantities added up across recipes.

MacroRecipe runs on iPhone only. You can preview your first menu for free, after which it is a paid subscription.

If you cook in batches, our macro-friendly meal prep guide pairs five recipes with one list and a fridge-and-freezer schedule.

Frequently asked questions