Why Batch Cooking Suits Vegetarian Weeks

Vegetarian cooking rewards a bit of forward planning. The ingredients that do the heavy lifting — lentils, beans, roasted vegetables, generous sauces — are precisely the ones that keep well and improve after a day in the fridge. Spend ninety minutes on a Sunday and you have the components for four or five evening meals that come together in twenty minutes flat. No midweek panic, no sad half-used pack of spinach, and a noticeably lower grocery bill because you are buying dried pulses and whole vegetables rather than pre-prepared shortcuts.

The trick is not to cook five complete meals in advance. Cook components, store them separately, and combine them differently each night so nothing feels like leftovers.

Start With a Pot of Lentils

Dried lentils are the single best value in the shop. Puy or green lentils hold their shape and work in salads, ragùs and tray bakes; red lentils collapse into silky dhals and soups.

• Puy or green lentils: simmer 500g in plenty of unsalted water for 20–25 minutes until tender but still firm. Drain, drizzle with olive oil and a splash of red wine vinegar, and store. This makes roughly 1.2kg cooked — enough for four meals.
• Red lentils: soften a chopped onion and two cloves of garlic, add 400g red lentils, a tin of chopped tomatoes, 700ml vegetable stock, a teaspoon each of cumin and turmeric. Simmer for 20 minutes until thick and spoonable.
• Chickpeas and beans: if you have the time, cook a big batch from dried and freeze in 400g portions — the equivalent of a tin. Otherwise, tins are perfectly good and often cheaper than you think when bought in multiples.

One Tray of Roasted Vegetables, Endless Uses

Heat the oven to 200°C fan (220°C conventional). Chop two kilos of whatever is cheap and in season — aubergine, courgette, peppers, red onion, carrots, wedges of squash, a couple of peeled beetroot. Toss with three tablespoons of oil, plenty of salt, black pepper and a teaspoon of smoked paprika.

Spread across two trays so the vegetables roast rather than steam, and give them 35–40 minutes, turning once. Add a drained tin of chickpeas to one tray for the final fifteen minutes so they crisp at the edges. Roasted vegetables keep for four days in the fridge and are superb cold in a lunchbox with a spoonful of dressing.

Three Sauces That Pull It All Together

A plain bowl of lentils and vegetables needs a lift. Make two or three of these in jam jars and shake before using.

• Lemon tahini: four tablespoons of tahini, the juice of a lemon, one crushed garlic clove, a pinch of salt, then cold water a spoonful at a time until it loosens into a pourable cream.
• Herby yoghurt: 300g thick yoghurt, a handful of chopped mint or dill, lemon zest, salt. Excellent over roasted vegetables, fritters or dhal.
• Quick tomato sauce: soften an onion and three cloves of garlic, add two tins of chopped tomatoes, a splash of balsamic and a pinch of sugar. Simmer 25 minutes. This is your pasta, pizza, casserole and baked-egg base.

Five Suppers From the Fridge

• Lentil ragù: warm Puy lentils with tomato sauce, a splash of soy sauce and dried oregano. Toss through pasta with grated cheese.
• Tray-bake revival: tip roasted vegetables and chickpeas onto a tray, crumble over feta, bake at 200°C for 12 minutes, finish with herby yoghurt.
• Dhal night: reheat red lentils with a handful of spinach and a squeeze of lemon. Serve with rice, flatbreads and a spoon of yoghurt.
• Frittata: six beaten eggs, a mug of roasted vegetables, a mug of cooked lentils, fried gently in an ovenproof pan, then finished under the grill for 8 minutes.
• Grain bowl: cooked grains, lentils, roasted veg, something crunchy, tahini dressing, all in one bowl.

Storage, Freezing and a Few Cautions

Cool cooked food within 90 minutes and get it into the fridge quickly — shallow containers help. Cooked lentils, roasted vegetables and sauces keep for three to four days; label everything with the date, because good intentions fade faster than memory.

Freeze in portions that suit you: flat bags of lentils and sauce stack neatly and defrost in an hour on the worktop. Defrost in the fridge overnight where you can, and reheat until piping hot throughout. Reheat each portion once only, and never reheat rice more than once — cool it fast and refrigerate immediately if you are cooking it ahead.

Build the habit gradually. Start with a pot of lentils and a tray of vegetables this weekend, and by Wednesday you will wonder how you ever managed without them.