Why a Few Hours on Sunday Pays You Back All Week

By Wednesday, good intentions have usually collapsed into a sad sandwich and a bag of crisps. The fix is not willpower, it is having something genuinely appetising already sitting in the fridge. Batch cooking works best when you cook components rather than finished meals, so lunch on Tuesday does not taste identical to lunch on Monday.

Three base recipes cover it neatly: a tray of roasted vegetables, a pot of lentil ragu and a pan of cooked grains. Each takes about half an hour of largely hands-off work, they store well, and between them they can be reassembled into at least a week of varied lunches. Set aside an hour and a half, put the radio on, and work through them in the order below so the oven, hob and kettle are all earning their keep at once.

Start with a Big Tray of Roasted Vegetables

Heat the oven to 200°C (180°C fan, gas mark 6) and find your largest baking tray, or use two. Crowding the vegetables steams them instead of roasting them, so give everything room.

• 2 red onions, cut into thick wedges
• 2 peppers, deseeded and cut into 3cm chunks
• 2 courgettes, cut into 2cm half-moons
• 1 aubergine, cut into 3cm cubes
• 3 carrots, cut into batons
• 3 tbsp olive oil, 1 tsp fine salt, plenty of black pepper

Toss everything with the oil and seasoning, spread it out in a single layer and roast for 35–40 minutes, turning once at the halfway point. The vegetables are ready when the edges are properly caramelised and a knife slides through the carrot without resistance.

If you want two distinct flavours from one tray, split the vegetables between two trays and season one with smoked paprika and cumin, the other with dried oregano and a few unpeeled garlic cloves. That small difference makes a real dent in the midweek boredom. Cool completely, then store in a lidded container in the fridge for up to four days.

Simmer a Lentil Ragu While the Oven Works

This is the protein anchor of the week, and it is forgiving enough to make while you are also chopping vegetables. In a large pan, soften 1 diced onion, 2 diced carrots and 2 diced celery sticks in 2 tbsp olive oil over a medium heat for 10 minutes. Add 3 crushed garlic cloves and cook for another minute.

Stir in 2 tbsp tomato purée and cook it out for a minute, then add 2 tins of chopped tomatoes, 2 tins of drained green or brown lentils, 300ml vegetable stock, 1 tsp dried oregano, a bay leaf and a good pinch of salt. Simmer gently, uncovered, for 25–30 minutes until it thickens and the oil begins to pool slightly at the edges. Fish out the bay leaf and taste for seasoning.

This makes roughly six generous portions. Red lentils will collapse into a softer, soupier texture, which is fine for spooning over grains but less good for stuffing into a wrap; green or brown lentils hold their shape and are the better choice here.

Cook a Grain Pot You Will Actually Enjoy

Plain boiled rice is a chore to eat cold, so choose something with bite and flavour. Pearl barley, bulgur wheat, freekeh and brown rice all work well and all keep better than white rice.

Rinse 300g of your chosen grain, then cook it in plenty of well-salted water or vegetable stock until tender but still chewy. Drain thoroughly and spread it out on a tray to cool quickly rather than leaving it heaped in a hot pan. While it is still slightly warm, stir through the zest and juice of a lemon, 2 tbsp olive oil, a handful of chopped parsley or coriander and a pinch of salt. The dressing stops the grains clumping together in the fridge.

Building the Lunches

Work to a simple formula: one grain, one spoon of ragu, a quarter of the roasted vegetables, something fresh and a dressing kept separately. That structure is flexible enough to feel like a different meal each day.

• Monday: barley, ragu and roasted peppers, with a spoon of natural yoghurt
• Tuesday: bulgur, roasted vegetables and crumbled feta, with a lemon and mustard dressing
• Wednesday: ragu spooned over grains, topped with a handful of rocket added that morning
• Thursday: roasted vegetables and grains tossed together, with a tahini and lemon dressing loosened with warm water
• Friday: whatever is left, wrapped in a flatbread with a little hot sauce

Keep dressings in a small screw-top jar and add them at the last minute. Leaves, herbs and anything crunchy should go in on the day, not on Sunday.

Storing It All Safely

Cool cooked food within 90 minutes of it coming off the heat. Divide the ragu and grains into portion-sized containers so you only reheat what you need, and leave them loosely covered until they stop steaming before sealing and chilling.

Roasted vegetables and ragu keep for four days in the fridge; cooked grains are best eaten within three. Ragu freezes beautifully in flat portions for up to three months, so make double when you have the pan out. Reheat leftovers until piping hot all the way through, and if you are taking lunch to work, chill it overnight and use a cool bag rather than letting it sit warm in a rucksack. A little forward planning on a quiet afternoon turns the whole working week into something considerably more appetising.