Preheat the oven to 180°C/350°F/Gas 4.
In a roasting tray mix together the courgettes, aubergines, tomatoes, pepper, red onion, thyme, rosemary, sugar, and olive oil. Toss until vegetables are coated all over.
400 g courgettes - cut in 1cm dice, 400 g aubergines - cut in 1cm dice, 400 g cherry tomatoes - halved, 1 pepper - cut in 1cm dice, 1 red onion - cut in 1cm dice, 2 tsp dried thyme, 3 sprigs of fresh rosemary - chopped roughly, 2 tsp golden sugar, 5 Tbsp olive oil
Roast in the oven for 40-45mins until the vegetables are soft and brown. Toss once or twice while vegetables are cooking.
In the meantime make the cheese sauce. In a saucepan put the milk, butter and flour together. Bring to a boil while whisking until you have a thick and glossy sauce. Remove from heat. Add ricotta cheese and parmesan. Mix until well blended. Season to taste with nutmeg, salt and pepper.
600 ml milk , 50 g butter, 40 g plain flour , 250 g ricotta , 40 g vegetarian parmesan style cheese - plus extra for sprinkling, fresh grated nutmeg, salt & pepper
In a separate bowl scramble the drained smoked tofu with a fork.
400 g smoked tofu
Once the vegetables are ready, start laying together the lasagna.
Spread some tomato sauce at the bottom of a large lasagna dish. Top with one layer of lasagna sheets. Add 1/3 of the roasted vegetables topped by 1/3 of the remaining tomato sauce, topped by 1/3 of the scrambled smoked tofu, topped by 1/3 of cheese sauce.
750 g tomato sauce , 300 g lasagna sheets
Top this first layer with 1 layer of lasagna sheets plus 1/3 of the roasted vegetables topped by 1/3 of the tomato sauce, topped by 1/3 of the scrambled smoked tofu, topped by 1/3 of cheese sauce.
Top this second layer with 1 layer of lasagna sheets plus 1/3 of the roasted vegetables topped by 1/3 of the tomato sauce, topped by 1/3 of the scrambled smoked tofu.
Top this third layer with 1 layer of lasagna sheets plus 1/3 of cheese sauce.
Sprinkle some grated parmesan on top. Cook for 40mins until golden (to check the lasagna is cooked insert a knife into it. The pasta should be soft).