Thank you so much for all the advice! Really appreciate it, very helpful stuff (and I hope this thread is helpful to a lot of other people too!)

I'm a full-time student living in the UK in a very expensive city (central London) so I'm always looking for ways to cut down costs or get a little more out of life on the cheap, here are some of my tips:
1. A budget nutritious lunch or breakfast?
Breakfast: Overnight oats! Really into these ATM.
To make overnight oats, simply pour equal measures of milk and plain rolled oats into a bowl or jar with sugar to taste (I usually use 1-2 teaspoons) and leave in your fridge overnight and by the morning, it will have turned into the most perfect oats you've ever eaten! You can eat it hot or cold.
A lot of people fancy overnight oats up with the addition of fruits, seeds, yogurts, syrups and more (you'll see endless photos of picture perfect overnight oat dishes on Instagram in fancy little jars), but I prefer to keep it simple (just oats, sugar & milk) and microwave mine for 2 minutes in morning for an instant hot porridge breakfast to get me started for the day
Advantages of overnight oats & rolled oats:
1. Plain rolled oats are very cheap (I've bought them for as little as £1 per 1kg and even on-brand ones don't cost more than £2 per kg). A 2kg box supplied me with almost a months worth of good-sized breakfasts.
2. Unlike making porridge the traditional way, overnights require very little washing up.
3. Extremely low effort; just dump the oats and milk in a bowl and leave overnight for instant brekkie the next day.
4. Rolled oats are very versatile for use in other dishes.
5. Rolled oats are extremely filling, nutritious and easy to digest.
6. Oats lower your risks of heart disease, high blood pressure and a variety of cancers.
7. A lot of commercial cereals have a huge amount of added things which you don't really want to be eating (such as all kinds of preservatives, additives and excessive quantities of salt/sugar) but with overnight oats you can easily control what exactly is entering your system and cut out a lot of unnecessary stuff.
8. If you combine the oats with whole milk, you can turn the oats into an evenmore filling & energy rich meal.
Oats Nutrition
Dietary fiber — oats are rich in a specific type of fiber called beta-glucan. This particular type of fiber is known to help lower levels of bad cholesterol. One cup (81 grams) of dry oats contains
7.5 grams of fiberTrusted Source, the recommended daily intake of fiber is 25 grams for women and 38 grams for men.
Minerals — oats are rich in a range of important minerals,
vitamins, and
antioxidants.
Just 100 grams of oats contain:
- 51 percent of the daily recommended intake of thiamine
- 8 percent riboflavin
- 5 percent niacin
- 6 percent vitamin B6
- 14 percent folate
- 13 percent pantothenic acid
- 26 percent iron
- 44 percent magnesium
- 52 percent phosphorus
- 12 percent potassium
- 26 percent zinc
- 31 percent copper
- 246 percent manganese
(
https://www.medicalnewstoday.com/articles/270680#nutrition )
As a student, cheap breakfasts are always on my mind and I've gone through a lot of phases (for example a granola phase and a toast phase) but personally the thing that really struck me about overnight oats was apart from being a nice way to start the day (nothing like waking up in bed with a piping hot bowl of instant porridge on a cold morning), my energy levels and feelings of fullness are so much better than they were on all the other breakfasts I've tried (I feel like with overnight oats I sense the energy release quicker but also that its more lasting), so 10/10 would recommend
Lunch
Tuna salad: Mix canned tuna, canned beans, sweatcorn, chopped peppers & chopped red onion together with some dressing to make a few servings of high protein lunch. There are endless variations on the tuna salad dish, for example:
https://www.deliciousmeetshealthy.com/mediterranean-tuna-salad/ and it can be bulked out with pasta too.
Advantages: Cheap, high protein, filling, has vegetables, minimal washing up, easy, uses store cupboard foods, pack lunch.
Three bean salad: https://www.simplyrecipes.com/recipes/three_bean_salad/ &
https://www.inspiredtaste.net/46546/easy-bean-salad/ recipe examples. You can also add feta cheese to bean salad to knock its protein & level up even further for extra-fillingness.
Advantages: Cheap, high protein, filling, has vegetables, minimal washing up, easy, vegetarian, pack lunch.
Warning: Dried beans are a bit cheaper than canned, but be careful when using beans like kidney and soya beans as they contain toxins that require destruction via heat before you can safely consume them (if you eat raw kidney beans or soya beans they will give you terrible stomach aches). If you buy canned kidney beans though they have already been subjected to these processes and can be eaten straight out of the can (worth it, IMHO).
+Most of the beans (including kidney beans) are very healthy for you though, containing a great deal of protein & fibre. Soya beans can also be substituted for meat as they contain the full 20 chain of amino acids (while there are a lot of high protein sources of non-animal protein, not all contain complete chains of amino acids).
Toast recipes, such as scrambled eggs on toast and cheese toasties.
Advantages: Cheap, high protein, easy, quick to make.
Spanish Omelette: https://www.bbcgoodfood.com/recipes/real-spanish-omelette &
Tuna bake: https://www.bbcgoodfood.com/recipes/tuna-pasta-bake
Advantages: High protein, cheap, simple & makes many portions.
Broccali: I'm really into brocalli (or "Bro-calli" as I like to call it, because its the coolest vegetable of them all

) ATM, I can pick one up for 80p and it provides me with at least 3 portions of green veg to serve on the side of anything I make. One of my improvised recipes is to stir-fry it with carrot & garlic in oil and then add some soy sauce and toasted sesame seeds, but here's a couple of recipes for stir-fried and sauteed brocali:
https://www.wholesomeyum.com/sauteed-broccoli-recipe/ &
https://www.bbc.co.uk/food/recipes/garlicchilliandbrocc_90660 .
Advantages: Cheap, easy to cook, gets your green veg into your diet. Brocallis also an excellent source of Vitamin C & K:
https://www.healthline.com/nutrition/benefits-of-broccoli#TOC_TITLE_HDR_2Other tips for bulking out food & getting the most nutrition:
1. Adding beans to pasta dishes will make them significantly more filling & up their protein content.
2. Choose brown & wholemeal versions over white & refined, they're more filling and nutritious.
3. This textured vegetable protein:
https://www.amazon.co.uk/dp/B07GT4R44G/ is incredibly cheap and can be used as both an alternative to mince and also a bulker for mince, making it go much further. Its also pretty instant to cook, so you can add it to stuff like ramen noodles too.
4. Slightly undercook your veg and eggs for a better taste and less loss of nutrients.
2. A budget desert?
Fried bananas: Lightly fry some firm bananas in a pan with butter until they are slightly softened on the outside, spinkle some brown sugar & lime/lemon juice on them and serve. Makes a tasty dessert which also goes well with ice cream.
Advantages: Cheap, easy, healthy, quick to make.
Flapjacks! Super easy to make, cheap and delicious (I've never known anyone who doesn't like flapjacks), they can also used those rolled oats and only require 3 ingredients to make (oats, butter & golden syrup).
Advantages: Cheap, easy, filling, high protein, makes many portions.
3. A budget way to de-stress?
Listening to podcasts, such as meditation & science podcasts on Spotify.
Watch free documentaries on Youtube (I like history ones).
Read books from your local library
Go for walks
Do drawing
Photography using your smartphone, go exploring
4. A budget way you can improve your home?
Save energy bills: Seal any gaps around your windows with tape and keep curtains/blinds closed on windows to help retain heat.
Improve environment: Grow your own houseplants, very rewarding and there are many easy ones you can grow. Being around houseplants will reduce your stress levels and improve the air quality in your home, plus they're very aesthetic. If you want to be super-savvy, grow indoors plants that you can eat, such as lettuce & watercress. Here's a cool little time lapse video of someone growing a dragonfruit:
5. Your best budget place to buy supplies or star buy lately?
None at the moment, but I do fish for a lot of bargains in the reduced aisles everytime I shop (they're almost always the 1st place I go to).