I've attempted to compare like with like here so I've pulled together a standard weekly dinner only menu for our family, and then tried to find ready meal equivalents for the "junk food". This includes buying pre-prepared salads/veg if they are a side, but doesn't always make as much, or as good, food (for example, the burgers would be 100g burger patties each in the junk food, whereas our homemade burger patties are usually 200g each)
Assuming no store cupboard, I?ve listed the key cupboard ingredients needed at the end and have added that cost on to the shop which makes the from scratch slightly more expensive than it would usually be once you had your store cupboard set up.
Finally, all the prices listed here are Tesco online prices, and I haven't used promotional prices at any point so there are savings that could be made both by shopping smarter, or moving to a budget supermarket such as Aldi. We normally shop there for a very similar shop + breakfast, lunches, drinks etc and it usually comes to about £40.
So, without further ado, a rather lengthy menu plan...
 
Monday = Cheat Day ? Pizza, chips & salad
Ingredients: £4.39
2 pepperoni pizzas (£1 each = £2), ½ bag of chips (82p for bag = 41p), 1 ½ bag of rocket (£1 a bag = £1.50), 150g cherry tomatoes (98p for punnet = 49p), 1 carrot, grated (72p for 8 = 9p)
Store cupboard: olive oil, balsamic vinegar, salt (for chips)
Time: 25 mins for pizzas, salad prepped in that time
Equipment: Oven, oven trays, grater, & knife
Tuesday: Prawn & rocket pasta
Ingredients: £2.70
360g spaghetti (32p for 500g = 32p), ½ bag of rocket (£1 a bag = 50p), 250g frozen prawns (£1.88)
Store cupboard: tbsp lemon juice, olive oil, salt, pepper, garlic & chilli flakes
Time: 20 mins (with prawns thawed the night before)
Equipment: 1 pan, wooden spoon, chopping board & knife
Wednesday: Chilli con carne on rice
Ingredients: £8.48 (makes double portions of chilli for tomorrow)
4 onions (1kg for £1 = 40p), 4 carrots (72p for 8 = 36p), 2 x tin kidney beans (50p each = £1), 400g tin taco mix beans (55p), 400g tin butter beans (59p), 3 tins chopped tomato (34p each = £1.02) 1kg mince (£4), 400g rice (40p for 1kg = 16p), cheese to serve (£2 for 400g = 40p)
Store cupboard: Salt, pepper, chilli flakes, balsamic vinegar
Time: 30 mins ? 1 hour depending on how you like chilli cooked
Equipment: 1 large saucepan, 1 medium saucepan, 2 wooden spoons, chopping board, knife & some sort of drainer
Thursday: Burritos with rice
Ingredients: £3.69
Left over chilli mix (cost counted yesterday), 1 tin chopped tomato (34p), packet spice mix (55p), tortillas (92p for 8) 200g rice (40p for 1kg = 8p), 160g cheese (£2 for 400g = 80p)
Time: 30 mins
Equipment: Saucepan, oven, baking tray, wooden spoons, grater, some sort of drainer
Friday: Spaghetti carbonara
Ingredients: £2.86
360g spaghetti (32p for 500g = 32p), 275g bacon (£1.04), 1 onion (1kg for £1 = 10p), 3 eggs (£2 for a 6 box = £1), 80g cheese (£2 for 400g = 40p),
Store cupboard: Pepper, olive oil, garlic
Time: 20 mins
Equipment: Chopping board, knife, 2 saucepans
Saturday: Home-made burgers with chips
Ingredients: £5.21
500g mince (£3), Bread crumbs (use ends of bread), ½ bag of chips (82p for bag = 41p), 1 egg (£2 for 6 = 34p), 1 onion (1 kg for £1 = 10p), burger buns (60p), 3 carrots (72p for 8 = 27p), Sliced cherry tomatoes (98p for punnet = 49p), Mushrooms (£1 for punnet = 50p),
Store cupboard: salt, pepper, chilli flakes, olive oil
Time: 30 mins
Equipment: Pan, wooden spoon, chopping board, knife, oven & mixing bowl
Sunday: Mushroom Risotto
Ingredients: £1.16
400g rice (40p for 1kg = 16p), 1 onion (1 kg for £1 = 10p), mushrooms (£1 for punnet = 50p), 80g cheese (£2 for 400g = 40p)
Store cupboard: Garlic, olive oil, stock, salt & pepper
Time: 45 mins
Equipment: Pan, wooden spoon, chopping board & knife
Store Cupboard: £6.43
- Olive oil £2
- Chilli flakes £1
- Lemon juice 50p
- Tomato puree 35p
- Stock cubes 20p
- Salt & Pepper 29p & 60p
- Balsamic vinegar £1
- Garlic 49p for 3
Left over at end of week: 96p
3 onions = 30p (add to store cupboard)
280g spaghetti, already costed
2 eggs = 66p (add to store cupboard)
Total cost: £35.88
The Ready Meal Version:
Monday: Pizza, Chips & Pre-prepared salad
Ingredients: £5.91
2 pepperoni pizzas (£1 each = £2), ½ bag of chips (82p for bag = 41p), ready prepped salad (2 x £1.75 = £3.50)
Time: 25 mins for pizzas & chips
Equipment: Oven, oven trays
Tuesday: Tesco Prawn spaghetti
Ingredients: 2 x £3.25 = £6.50
Time: 5 mins in microwave
Equipment: Microwave
Note: Meal must be eaten within 2 days of buying
Wednesday: Chilli con carne on rice
Ingredients: 4 x tesco value frozen chilli con carne & rice = £4
Time: 10 ½ mins
Equipment: Microwave
Thursday: Chicken enchiladas (replaced as no burritos) & rice
Ingredients: 2 x enchiladas ready to cook (£3.35 x2) & Microwaveable Rice (£1) = £8.70
Time: 20 mins in oven
Equipment: Oven, baking tray,
 
Friday: Spaghetti Carbonara
Ingredients: 2 x spaghetti carbonara = £4.80
Time: 9 ½ mins from frozen
Equipment: Microwave
Saturday: Microwaveable burgers with chips & veg
Ingredients: Microwaveable burgers (4 x £2) ½ bag of chips (82p for bag = 41p), prepped salad veg (£1.25) = £9.66
Time: 25 mins for chips
Equipment: Microwave, oven,
Note: burgers can be bought cheaper if frozen but all require frying which I count as cooking in this case the meal switch in frozen burgers + buns and cost = £4.76
Sunday: Mushroom Risotto
Ingredients: Frozen risotto = £1.89
Time: 9 mins
Equipment: Frying Pan, wooden spoon
Total Cost of ready meals: £41.46 or £36.56 (depending on Saturday choice)
So by my calculations, a ready meal equivalent is about £5/week more expensive for this type of food, and we would also have to consider the nutritional impact of living off ready meals.
That being said, this is obviously not the MOST budgeted meal plan, ready meals in particular could be a lot cheaper if you removed variety and bought 7 family value lasagnes for £21 - it would also be possible to home cook jacket potatoes with cheese 7 days a week which would come in very cheaply, but in both cases you'd soon get ill or bored, and I've have at least tried to think about vegetables!
Although I chose my favourite quick and easy meals, home made is still considerably more time consuming than ready meals, and overall you'd need at least a 10 piece kitchen set to be able to cook the full menu which can be very prohibitive for some people.
I hope that's been interesting - I've found it very eye opening how cheap frozen ready meals are in particular, and I can definitely see how hard it must be to justify £2 on olive oil when you can get a family lasagne for £3.