Habits that help
- Eat calmly and away from a screen, even if you only have twenty minutes. You will notice better when you have had enough.
- Prepare your lunchbox the night before, let it cool and store it in the fridge.
- Use part of your break to go for a walk after eating.
Bringing food from home has benefits you notice quickly. You know what you are eating, control the amount and can vary your meals throughout the week. The problem is often the lunchbox itself: it ends up being the same pasta dish every time, does not keep you full until your afternoon snack or looks unappealing when you open it.
It is a complaint we often hear in consultations from people who eat out during the week. Often, all it takes is changing the proportions in the lunchbox, without eating less.
Who are these packed lunches for, and who are they not for?
Who they are for. Healthy adults who eat away from home during the week and want to lose fat gradually. They also suit anyone who simply wants to eat better at lunchtime without being left hungry.
Who they are not for. They have not been calculated for pregnancy or breastfeeding, anyone under 18, or people with diabetes treated with insulin or medicines that can lower blood sugar too much. They are also not for people with chronic kidney disease, anyone who has or has had an eating disorder, or anyone who needs to gain weight. If you have a condition with its own dietary plan (coeliac disease, a diagnosed allergy, heart failure or liver disease), follow your own plan. In these cases, the plan must be tailored to you. If food causes you anxiety or guilt, the first step is to speak with a team specialising in eating disorders, before changing your menu.
The recipes do not include a calorie figure. They have not been calculated using a food composition programme, and an approximate figure would give a false sense of precision. They are low in calories because of how they are put together: plenty of vegetable volume, enough protein and a measured amount of carbohydrates.
6 low-calorie packed-lunch recipes
All quantities are approximate and are for one meal serving for an adult. If you are still hungry afterwards, increase the vegetables first. If you exercise or have a physically demanding job, increase the carbohydrates.
1. Potato salad with tuna, egg and tzatziki sauce
Servings 1 · Time 30 minutes · Difficulty easy · Allergens fish, egg, dairy
Ingredients per serving. 150 g potato, 1 medium tomato, ½ green pepper, ¼ onion and 1 handful of fresh spinach (30 g). For protein, 1 small tin of tuna in spring water, drained, and 1 egg. For the sauce, 1 plain unsweetened yoghurt (125 g), ¼ cucumber and ½ garlic clove. For flavour, lemon juice, a few mint leaves, 1 teaspoon extra virgin olive oil and a pinch of salt.
- Boil the potato with its skin on and cook the egg; let them cool and chop them.
- Chop the tomato, pepper and onion and mix them with the spinach, potato, tuna and egg.
- Grate the cucumber, crush the garlic and mix them with the yoghurt, lemon, chopped mint, oil and salt. Leave the sauce to rest in the fridge for one hour.
- Keep the sauce in a separate container and dress everything just before eating.
2. Courgette spaghetti with chickpeas
Servings 1 · Time 15 minutes · Difficulty easy · Allergens none of the fourteen
Ingredients per serving. 1 large courgette (250 g), spiralised, and 150 g drained cooked chickpeas. For the stir-fry, 1 garlic clove, fresh parsley, 1 tablespoon extra virgin olive oil, salt and pepper. To top, 10 g pumpkin seeds.
- Fry the chopped garlic and parsley in a pan with the oil.
- Add the rinsed chickpeas, season with salt and pepper, and stir for a couple of minutes.
- Add the courgette spirals, cover and cook over a low heat for a few minutes until tender but still holding their shape. If you do not have a spiraliser, cut the courgette into thin strips with a peeler or into dice.
- Leave to cool, transfer to the lunchbox and add the seeds at the end so they stay crunchy.
3. Pineapple salad and brothy prawn rice
Servings 1 · Time 35 minutes · Difficulty medium · Allergens crustaceans, fish (stock)
Ingredients per serving. For the salad, lettuce and rocket to taste, ½ carrot, ¼ cucumber and 80 g pineapple or melon. For the rice, 50 g round-grain rice, 150 ml fish stock and 100 g peeled prawns. For the sofrito, ¼ onion, ¼ green pepper, ½ garlic clove, ½ large tomato and 1 teaspoon extra virgin olive oil.
- Sauté the chopped onion, pepper, garlic and tomato, then blend them.
- Return the sofrito to the paella pan, add the rice and stock, and cook over a medium heat.
- When the rice is almost tender, add the prawns, sautéed separately. Add water or stock to make it brothy but not soupy.
- Cool it quickly in a shallow, wide container and refrigerate it within one hour. Eat it the next day or freeze it.
- Pack the salad in a separate lunchbox, without dressing.
4. Grilled vegetables with sole en papillote
Servings 1 · Time 30 minutes · Difficulty easy · Allergens fish; gluten if you choose bread
Ingredients per serving. For the papillote, 150 g sole fillet, ¼ onion, ¼ leek and ½ small courgette. For grilling, ½ aubergine, ½ pepper, 4 button mushrooms and 1 tomato, with a few drops of extra virgin olive oil and spices to taste. For carbohydrates, 40 g wholegrain bread or 120 g boiled potatoes.
- Place the sole on baking paper with the onion, leek and courgette, cut into small pieces. Season with salt and pepper and seal the parcel well.
- With the oven preheated, bake it for 15 to 20 minutes and let it cool before storing. If you cannot find sole, hake or fresh salt cod work just as well.
- Grill the aubergine, pepper, mushrooms and tomato, turning them once, with whichever spices you like.
- Store the bread separately so it does not get soggy.
5. Wholegrain pasta with broccoli and curried turkey
Servings 1 · Time 15 minutes · Difficulty easy · Allergens gluten
Ingredients per serving. 60 g uncooked wholegrain macaroni, 200 g fresh or frozen broccoli and 120 g turkey breast. For flavour, curry or another spice, granulated garlic, chopped parsley and 1 teaspoon extra virgin olive oil.
- Cook the broccoli in the microwave in a microwave-safe container with three tablespoons of water, until tender.
- Boil the macaroni for the time indicated on the packet, drain it and rinse it with cold water.
- Grill the turkey with the curry, cut it into pieces and sauté it with the garlic and parsley.
- Mix the broccoli and pasta in the same pan, stir and leave to cool.
6. Mixed vegetables with salmon
Servings 1 · Time 30 minutes · Difficulty easy · Allergens fish
Ingredients per serving. 100 g potato, ½ carrot, ¼ onion, 80 g green beans, 80 g cauliflower and 40 g peas. For protein, 120 g salmon fillet, with lemon, salt and pepper.
- Peel and chop the potato, carrot and onion; cut the beans and cauliflower.
- Boil the peas and green beans for a few minutes, add the carrot and onion, and after about 8 minutes add the potato and cauliflower.
- Drain the vegetables when tender and leave them to cool before transferring them to the lunchbox.
- Cook the salmon in a pan with salt, pepper and lemon. As an oily fish, it stays juicy in the lunchbox; mackerel does too.
The shopping list for the 6 packed lunches
One serving of each recipe, for one person. If you repeat any during the week, multiply its ingredients.
Vegetables
- 1 bag of fresh spinach, 1 lettuce and 1 bag of rocket
- 2 courgettes (one large) and 1 aubergine
- 3 tomatoes, 1 green pepper and ½ red pepper
- 1 cucumber, 1 carrot and 1 leek
- 2 onions and 1 head of garlic
- 1 broccoli (or 200 g frozen), ¼ cauliflower and 80 g green beans
- 4 button mushrooms and 40 g peas (fresh or frozen)
- 250 g potatoes (370 g if you choose potato instead of bread for the sole lunchbox)
Fruit and herbs
- 80 g pineapple or melon and 2 lemons
- Fresh mint and parsley
Fish, seafood, meat and eggs
- 150 g sole fillet and 120 g salmon fillet
- 100 g peeled prawns and 150 ml fish stock
- 120 g turkey breast
- 1 small tin of tuna in spring water
- 1 egg
Pulses, grains and bread
- 1 jar of cooked chickpeas (150 g drained)
- 50 g round-grain rice and 60 g wholegrain macaroni
- 40 g wholegrain bread (if you do not choose potato)
Dairy and pantry
- 1 plain unsweetened yoghurt
- Extra virgin olive oil
- 10 g pumpkin seeds
- Curry, granulated garlic, salt and pepper
Why do these packed lunches satisfy you with fewer calories?
All six follow the Harvard Healthy Eating Plate adapted for a lunchbox [1]. Half of the container is vegetables, one quarter is protein and the other quarter is wholegrain carbohydrates or potatoes. Putting potatoes and pulses in the carbohydrate quarter is our adaptation. With a compartment lunchbox, you can see the proportions at a glance.

- Vegetables, half. Cooked, in soup or in a salad with the dressing on the side. They fill the container and your stomach with few calories and plenty of water and fibre. At least three servings of vegetables a day are recommended [2], and your midday lunchbox is a good place to get one or two. Green beans, broccoli, cauliflower, courgette, pepper, aubergine and carrot keep well from one day to the next.
- Protein, one quarter. Pulses, eggs, fish, seafood or white meat such as chicken, turkey or rabbit. This is the part that helps most with getting to your afternoon snack without feeling hungry. Pulses are recommended at least four times a week [2], and a lunchbox is an easy way to reach that amount. Fish dries out less when cooked en papillote, in a stew or, if it is oily, as with salmon.
- Carbohydrates, one quarter. Rice, wholegrain pasta, wholegrain bread, potatoes or sweet potato. They are not eliminated, just portioned, so they do not displace the vegetables. If pulses are already in the dish, they count as both protein and carbohydrates.
- A small amount of good fat. A tablespoon of extra virgin olive oil and some nuts or seeds for texture. Homemade sauces made with plain yoghurt or crushed tomato are good alternatives to bottled ones.
When you are in a hurry, the same proportions work with what you have at home. Sauté a bag of frozen vegetables with a teaspoon of oil, add two scrambled eggs and serve with a potato cooked in the microwave. Or mix a small cup of cooked brown rice with a tin of tuna in spring water, roasted pepper and a handful of rocket.
If you want to organise the whole week in one afternoon, find the method in how to organise your packed lunches for the week with batch cooking. For the other meal of the day, see seven low-calorie dinners with a shopping list. And our full weight-loss plan is in our guide to losing weight and keeping it off.
How long does a packed lunch keep in the fridge, and how should you reheat it?
Cooked food should go into the fridge within two hours, and should be eaten within the next three or four days, according to the United States Department of Agriculture [3]. Rice has its own rules. To cool food faster, divide it among shallow, wide containers instead of leaving the pot on the counter.
- Reheat until it is very hot all the way through, to about 74 °C [3]. In the microwave, stir it halfway through and leave the lid slightly ajar.
- Take extra care with rice. Cool it as quickly as possible, ideally in less than one hour, keep it in the fridge for no more than one day and reheat it only once [4]. If you cook it for several days, freeze the portions you will not eat tomorrow.
- If you will not eat it within those days, freeze it on the day you cook it. Rice, pulses, soups and stews freeze well; potatoes, pasta and cheese change texture when thawed.
- If there is no fridge at work, carry it in an insulated bag with a cold pack.
For the container, a microwave-safe glass one with an airtight lid is best. If you bring a first and second course, use separate lunchboxes.
What packed-lunch mistakes do we see in consultations?
The phrase we hear most is “I eat well at lunchtime, but then I snack”. Often, the reason is a lunchbox that is too small, which leads to snacking in the afternoon. These are the other mistakes we see repeatedly.
- Making carbohydrates the main event. Pasta with cheese sauce or rice with bottled tomato sauce as a one-dish meal leave vegetables out. They can still be part of the lunchbox, but should take up only a quarter.
- Treating vegetables as decoration. A lettuce leaf or the onion in an omelette does not count as half the lunchbox.
- Repeating the same dish every time. It gets boring and makes the week less varied. Tuna salad can become chickpea or turkey salad, and Bolognese can become pasta with broccoli and lentils.
- Using the wrong-sized lunchbox. A small one leaves you hungry, while a very large one encourages you to serve yourself more.
- Dressing the food the night before or reheating grilled meat or fish. Salad leaves go limp and meat or fish dries out. Carry the dressing in a small container and choose stews, papillote or homemade sauce.
- Bottled sauces, aged cheeses, fried and battered foods. They add saturated fat and salt without making you feel fuller, and fried foods lose their texture when reheated.
- Relying on tinned foods and cured meats as your only protein for the week. They provide a lot of salt. Alternate them with pulses, eggs and fresh fish.
If your goal is to lose weight, a packed lunch is one tool among others, alongside dinner, rest and physical activity. The full plan, including its pace and follow-up, is what we work on in our weight-loss nutrition consultations.
Start with the recipe that is closest to what you already eat and adjust the amount to your hunger. Any dish you enjoy can make a good packed lunch if half of it is vegetables.
If you want an eating plan tailored to your schedule, tastes and weight goal, our weight-loss nutrition team will build it with you, in Barcelona or online.
Changes that help
Vegetarian version
Instead of fish, seafood or turkey, use pulses, eggs or firm tofu (which contains soy), because pulses provide protein and carbohydrates; reduce the pasta or rice accordingly.
Gluten-free
Instead of macaroni or wholegrain bread, use brown rice, potatoes, sweet potato or gluten-free legume pasta, because this keeps the carbohydrate quarter while leaving the rest unchanged.
Lactose-free
Instead of the plain yoghurt in the tzatziki, use lactose-free yoghurt or unsweetened soy yoghurt (which adds soy as an allergen), because the sauce keeps its creamy texture and tang.
Shellfish allergy
Instead of prawns, if you have a shellfish allergy, use chicken or firm tofu and vegetable stock, because cuttlefish and squid are also shellfish and may cause a cross-reaction.
Your first step this week
A lentil lunchbox in five minutes
On Monday, rinse a jar of cooked lentils and mix them with chopped tomato, pepper, spring onion and cucumber. Keep the dressing in a separate container.

Your week of meals, ready for the fridge
- 7-day menu with the shopping list
- 8 recipes: cook once, eat twice
- What to do when the week goes off track
Where should we send it?
Free PDF, in your inbox in a moment.
Data controller: Alimmenta Tu Vida, S.L. Purpose: to send you the guide and, only if you tick the second box, tips by email on the topic. You can withdraw your consent and exercise your rights at [email protected]. Legal basis, recipients and retention periods are in our privacy policy.
When to see a doctor
These six meals are general suggestions for healthy adults. They are not an individualised eating plan and do not replace a nutrition consultation or medical treatment. If you have an illness, take medication or are pregnant, consult your doctor or dietitian-nutritionist beforehand.
If you notice this sign while following these lunchbox suggestions, do not wait to change your food.
- You faint while following these packed-lunch suggestions. Seek urgent care today.
The full list of signs and when to seek a medical appointment is in the guide to losing weight and keeping it off.

Every case is different
General guidance can only take you so far. The next step is to look at your situation in a consultation.
Keep reading

Batch cooking: how to organise your weekly food containers
Setting aside two hours to cook at the weekend avoids improvisation, daily stress and quick choices that move…

7 low-calorie dinners: your week and shopping sorted
By dinner time there is little appetite for cooking, and it is easy to end up eating the…

Quince: properties, sugar in quince paste and how to use it
You see quinces at the greengrocer’s and wonder how to eat something so hard. And you love quince…

Low-calorie weekly menu: 7 days and a shopping list
Cutting calories often means going hungry and eating unappealing meals, and nobody can stick with that for more…
ConsultationRegistered dietitian for weight loss in Barcelona and online
More than 17 years of saying goodbye to diets
Book a visit →
How we work: first visit, eating plan and follow-up
Sources
- Harvard T.H. Chan School of Public Health. Healthy Eating Plate. The Nutrition Source. Revisada en 2023. https://nutritionsource.hsph.harvard.edu/healthy-eating-plate/
- López García E, Bretón Lesmes I, Díaz Perales A, et al. Informe del Comité Científico de la Agencia Española de Seguridad Alimentaria y Nutrición (AESAN) sobre recomendaciones dietéticas sostenibles y recomendaciones de actividad física para la población española. Revista del Comité Científico de la AESAN. 2022;36:11-70. https://dialnet.unirioja.es/servlet/articulo?codigo=8783742
- U.S. Department of Agriculture, Food Safety and Inspection Service. Leftovers and Food Safety. https://www.fsis.usda.gov/food-safety/safe-food-handling-and-preparation/food-safety-basics/leftovers-and-food-safety
- Food Standards Agency. Home food fact checker. GOV.UK. 2020, updated en 2026. https://www.gov.uk/government/publications/home-food-fact-checker/home-food-fact-checker
Written and reviewed by

How we can help
Now, applied to you
How we work: first visit, eating plan and follow-up4.9 on Google · 5.0 on Doctoralia · 2,047 reviews







