Stir-fry all the chopped veggies. I find that slicing the courgette into ribbons with a peeler takes up less space and you can get more veggies in your layers. Chuck in all the tomatoey stuff and salt, pepper and pinch of sugar then simmer while you make the cheese sauce.
Melt the butter. Add the flour mix together till it looks like a lump of play dough. Whisk in the milk slowly till it’s a nice smooth consistency. Add the grated cheese.
Layer the lasagne sheets then the tomatoey veggie mix until you have no room left in the dish then top with the cheese sauce and grated cheese bake for 40 – 45 minute at gas 6.