Kira Mei is a certified personal trainer and nutrition coach helping UK adults over 40 get fit, eat well, and build sustainable habits.
A delivered dinner now costs the wrong side of £8, and even a chilled "high protein" ready meal sits around £4 for maybe 25g of protein. Cook it yourself in batch and the same plate — 40g of protein, a proper portion of carbs and veg — lands under £2, often closer to £1.50. The maths is not subtle: a single tray of frozen chicken thighs feeds five dinners for the price of one takeaway, and the protein per pound is roughly three to four times better. The food industry sells the idea that eating well at dinner is either expensive or time-consuming, and batch cooking quietly demolishes both. Ninety minutes on a Sunday turns a £10 shop into five high-protein dinners that beat anything you'd order in. Below are five dinners costed to the penny from Aldi, Lidl and Tesco, the batch system that produces them, and the storage that keeps them safe all week.
A high-protein meal prep dinner in the UK can be built for under £2 a portion and 35–45g of protein using frozen chicken thighs (around £3 per kg), tinned lentils (45p a tin), dried pasta and rice, and frozen veg from Aldi, Lidl or Tesco. Batch-cooking five at once drops the per-portion cost well below a £4 ready meal while raising the protein.
The Cheapest High-Protein Bases for Sub-£2 Dinners
The lowest cost-per-gram protein bases for budget UK dinners are frozen chicken thighs, tinned lentils, eggs and tinned fish — each delivers 35g-plus of protein per portion for well under £1 of protein.
Dinner is where most budgets leak, because it's the meal people are most tempted to outsource. Anchoring it to a cheap protein base is what keeps the whole plate under £2.
Frozen chicken thighs versus breast
Frozen chicken thighs run around £3 per kg at Aldi and Lidl — noticeably cheaper than breast — and stay moist through reheating, which matters for meal prep. A 150g cooked portion delivers roughly 35g of protein for about 45p. The British Nutrition Foundation recommends varying protein sources, so rotating thighs with pulses and fish keeps the week balanced. Breast is the default people reach for, but it dries out on the third-day reheat where thighs stay tender — and you pay £1–£2 more per kilo for the privilege. For batch cooking specifically, thighs are the smarter buy: cheaper, more forgiving, and impossible to overcook into cardboard. Bone-in is cheaper still if you don't mind a minute of carving.
Tinned lentils as a protein extender
A 45p tin of green lentils adds around 13g of protein and bulks a dish out cheaply. Stretching 500g of mince with two tins of lentils turns four portions into six, dropping the per-plate cost without dropping the protein. Money Saving Expert's cheap supermarket food guide highlights tinned pulses as one of the best value-per-gram staples in any UK supermarket. Dried lentils are cheaper again — under £1.50 a kilo — if you don't mind a 20-minute simmer, and a kilo bag stretches across a month of dinners. The texture disappears into a bolognese or chilli, so nobody at the table clocks that half the "mince" is pulses. That single swap is the move that takes a dinner from £2.50 to under £1.60 without touching the protein total.
The same extender logic works with other cheap pulses. Tinned kidney beans bulk out a chilli for around 40p a tin, butter beans melt into a stew, and red lentils thicken any tomato sauce while quietly lifting the protein. Buying these dried rather than tinned roughly halves the cost again — a 500g bag of red split lentils is often under 90p and yields the equivalent of three or four tins. For batch cooking the dried route makes sense, since you're simmering a big pot anyway and the extra 15 minutes is hands-off. Across a week of dinners, leaning on pulses to stretch a smaller quantity of meat is the single biggest lever on the per-plate cost, and it's the move that keeps every dinner on this list under £2 even as meat prices drift up.
Five High-Protein Meal Prep Dinners Under £2
Five batch dinners — chicken thigh traybake, lentil bolognese, tuna pasta bake, chickpea curry, and egg fried rice — each deliver 35–45g of protein for £1.40–£1.90 a portion from UK supermarket staples.
Variety stops a prepped week becoming a grind, and rotating bases also spreads the nutrient mix the BNF advises building meals around.
Chicken thigh and rice traybake (42g protein, ~£1.70)
150g cooked thighs, 75g rice, a tray of frozen mixed veg roasted alongside. One tray, one pan, five boxes. Around £1.70 a portion and it reheats beautifully three to four days later. Toss the thighs in paprika, garlic and a little oil before roasting and the whole tray comes out of the oven seasoned in one go. Roasting frozen veg straight from the bag — no defrosting — crisps the edges and saves a step. This is the dinner to lead the week with, because thighs hold their texture longest of the five.
Lentil and beef bolognese (38g protein, ~£1.60)
250g 5% mince stretched with two tins of lentils over wholewheat pasta. The lentils double the portions and add fibre, landing each plate near £1.60 for 38g of protein. Brown the mince first, then add the drained lentils, a tin of tomatoes, an onion and whatever dried herbs you've got, and simmer for 20 minutes. It improves overnight as the flavours settle, which makes it ideal for the back half of the prep week. The sauce freezes for up to three months, so a double batch banks dinners for the weeks your plans fall apart.
Tuna pasta bake (35g protein, ~£1.50)
Two tins of tuna through 400g of pasta with a tin of sweetcorn and a simple cheese sauce, baked in one dish. The tuna brings the protein cheaply at about 70p a tin, and the bake portions into five for roughly £1.50 each. It reheats well and travels fine cold, so it doubles as a next-day lunch if a dinner portion goes spare. A handful of frozen peas stirred in adds veg for pennies.
Chickpea and spinach curry (30g protein, ~£1.40)
Two tins of chickpeas, a tin of tomatoes, frozen spinach and curry spices over rice. Fully vegetarian, the cheapest of the five at around £1.40, and it freezes for a month. A tin of coconut milk or a spoon of peanut butter makes it richer for pennies, and a handful of red lentils thickens the sauce while pushing the protein higher. It's the best-value freezer-filler of the lot — cook a double batch and you've banked four dinners for the weeks your plans fall apart.
The 90-Minute Sunday Batch System
A full week of high-protein dinners takes about 90 minutes of Sunday cooking — roast one protein tray, simmer one pot dish, cook one batch of carbs — then portion everything into five boxes.
The system, not the recipes, is what keeps dinners under £2. Cooking three components in parallel feeds the whole week from one shop.
Cooking three things at once
Put the chicken traybake in the oven, start a pot of bolognese or curry on the hob, and boil a big pan of rice or pasta at the same time. In 90 minutes you've produced enough for ten-plus portions across two dishes. The oven, two hob rings and a kettle do the work in parallel, so the clock time is far shorter than cooking each dish on its own night. Chop everything before you start heating anything — the prep is the slow part, the cooking mostly looks after itself once it's on. One washing-up at the end covers the whole week.
Portioning and labelling
Split into boxes straight off the heat, cool, and refrigerate within two hours. Label each with the cook date — NHS food storage guidance advises eating cooked meals within three to four days, so anything beyond that goes in the freezer.
How to Keep Sub-£2 Dinners Safe All Week
Batch-cooked high-protein dinners keep three to four days refrigerated and up to three months frozen, so a Sunday cook covers the working week with the back half frozen if needed.
The savings only land if the food gets eaten, so safe storage is part of the budget, not an afterthought.
Fridge versus freezer split
Keep three portions in the fridge for the first half of the week and freeze the rest. Rice-based dishes should be cooled fast and reheated once only, per NHS guidance, which matters most for traybakes and fried rice.
Reheating without ruining texture
Add a splash of water before microwaving rice and pasta dishes to stop them drying out. Curries and bolognese actually improve after a day as the flavours settle, making them the best candidates for the end of the week. Reheat in short bursts and stir halfway so the edges don't overcook while the middle stays cold — most microwaves heat unevenly, and a 90-second blast, a stir, then another 60 seconds beats one long zap. For frozen portions, move them to the fridge the night before so they thaw evenly; reheating from frozen works but takes longer and risks a cold core. Whatever the dish, reheat each portion only once, as NHS guidance advises, and make sure it's piping hot through before eating — that single rule keeps a week of batch-cooked dinners as safe as the day they were made.
Your Sub-£2 High-Protein Dinner Shopping List
A five-dinner high-protein plan from Aldi, Lidl or Tesco costs roughly £8–£9 total, averaging under £1.80 a portion while clearing 35g of protein every plate.
One list shows how far a single budget shop stretches once batch cooking does the work.
The shop and the total
500g frozen chicken thighs (£1.50), 250g 5% mince (£1.50), 4 tins lentils (£1.80), 2 tins chickpeas (90p), 1kg frozen mixed veg (£1.39), 500g rice (60p), 500g pasta (75p). Around £8.44 for ten-plus portions — comfortably under £2 each. Add a tin of tomatoes and curry spices from the cupboard and you've got everything for three different dishes. The frozen and tinned items carry forward, so the genuine weekly top-up is closer to £5 once the staples are stocked — the kind of figure that makes a single takeaway look absurd by comparison.
Scaling protein for bigger appetites
Need 45g rather than 35g? Add an extra 50g of chicken or a third tin of lentils — pennies on the plate. Kira Mei's Nutrition Blueprint gives you the macro framework, meal prep system, and UK supermarket strategy — one purchase, no subscription, no meal plan to follow forever. It's not a diet plan, it's a textbook, available at kiramei.co.uk for £49.99.
Frequently Asked Questions
Can you really make a high-protein dinner for under £2 in the UK?
Yes. A chicken thigh and rice traybake lands around £1.70 a portion for roughly 42g of protein, and a chickpea curry comes in near £1.40 for 30g. The key is batch cooking from cheap protein bases — frozen chicken thighs at about £3 per kg, tinned lentils at 45p — bought from Aldi, Lidl or Tesco. Cooking five at once spreads the cost and keeps every plate well under a £4 ready meal.
Which protein is cheapest for batch-cooked dinners?
Tinned lentils and frozen chicken thighs are the cheapest reliable bases. A 45p tin of lentils adds around 13g of protein and stretches dishes like bolognese, while frozen chicken thighs run about £3 per kg — cheaper than breast and better for reheating. Eggs and tinned tuna are close behind. Rotating these, as the British Nutrition Foundation advises, keeps both the cost low and the nutrient mix varied across the week.
How long do batch-cooked dinners keep?
Cooked high-protein dinners keep three to four days in the fridge and up to three months in the freezer, per NHS food storage guidance. Refrigerate portions within two hours of cooking, label them with the date, and freeze anything you won't eat by day four. Rice dishes should be cooled quickly and reheated only once. This split lets a single 90-minute Sunday session cover a full week safely.
How do I stop meal-prep dinners getting boring?
Rotate the protein base and the cuisine across the week — a chicken traybake, a lentil bolognese, a chickpea curry and a tuna pasta bake feel like four different meals despite sharing staples. Varying sources also spreads the nutrient mix the British Nutrition Foundation recommends. Cooking two dishes each Sunday rather than one doubles the variety for the same effort, so no two consecutive dinners repeat.
Is batch cooking actually cheaper than ready meals?
Significantly. A £4 chilled ready meal delivers around 25g of protein, while a batch-cooked dinner hits 35–45g for under £2. Across five dinners a week that's a saving of more than £10 for better macros, or over £500 a year. Money Saving Expert highlights own-brand and tinned staples as the cheapest route to value, and batch cooking is how you turn those staples into meals you'll actually eat.
Disclaimer: This article is for informational purposes only and does not constitute medical, nutritional, or professional fitness advice. Always consult a qualified healthcare professional before making changes to your diet or exercise routine.