Some simple meal ideas would be greatly appreciated!
I don't pretend this is a good diet, but I don't do well at making time to prepare stuff.
Breakfast: One pot of porridge, store bought, about 200kcal. Use fruit and fibre if you like it but measure your portion so you know you're getting 200kcal or more.
Lunch: 40g (dry weight) wholewheat pasta, half a tin (about 110g drained weight) mixed beans, one tuna tin, 2tblsp dressing. About 500kcal
3pm Snack: 1 tin mackerel, about 250 kcal
Dinner: Something 600 kcal with less carbs than protein. A 300kcal hamburger on a bap (150kcal) with mustard and chilli relish should come to around 500 kcal give or take, I take the other 100 as a 0% beer
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Or treat yourself with a curry but forego the rice for a wholemeal pitta. Some curries have more carbs than others so don't be afraid to check labels, you don't want to go protein mad but balance is good.
If you get used to thinking along the lines of what has protein, what has fast carbs, what has slow carbs and what portion size you want for the calories you need then in time you'll be able to eat pretty much anything you want.