I enjoy vegetarian meals, and whilst I eat meat, it's great to have meatless days too. I am a very fussy meat eater - for instance I will only buy sausages from my trusted butcher, I'd never eat a burger unless I make it myself, likewise with bolognese sauce, who knows what's hidden in that innocent looking sauce. I would never buy a sandwich which contains meat of any description.....yes I'm a very, very fussy meat eater.
The lasagne recipe is from BBC GoodFood website, I made a few substitutions, I'm not too keen on aubergines and used a couple of courgettes, red onions, yellow and red pepper and sliced chestnut mushrooms. Everything in the recipe is made from scratch including the tomato sauce, it's best to be prepared to spend quite some time in the kitchen but the result is worth it. I served mine with a leafy salad and sundried tomato flatbread.
The original recipe includes a white sauce but I think a cheese sauce would have worked well. Have you made a sauce which tastes of flour? Step by step instructions from WikiHow - show how to make a white/cheese sauce and how to avoid this problem.