My wife (no pics) is on a diet at the moment and is eating oats for breakfast. I haven't eaten oats since I was a kid and hated porridge, so gave them a go. I didn't make porridge as such, just oats and milk (unheated), and it was pretty good, certainly way less stodgy than proper porridge.
Anyway, being a bit of a geek for this sort of thing, I played about with ingredients to try to produce a perfect breakfast in terms of nutrition, taste and cost. This is what I came up with, ready to be shot down in flames by the P+B fitness and diet gurus: 80g oats, 170 ml milk, 100ml water, 40g bran flakes and 10g protein shake powder. The key nutrition info is: 561 kcal, 10g fat, 15g sugar (almost all 'natural'), 26g protein, 14g fibre... and just 41p per portion.
It tastes pretty good, is quick to make and is properly filling, not like a bowl of normal cereal that leaves me hungry 2 hours before lunchtime. Before anyone says it's lacking in fruit and veg, yes it is, but I always make up for that with lunch and dinner.