Heat the oil in a large pan and fry the onion over a gentle heat for 2-3 minutes until it starts to soften.
Add the rest of the vegetables, stir and gently fry for a further 2-3 mins until they start to soften.
Add the tinned tomatoes and the water., then stir in the rest of the ingredients.
Bring to the boil and reduce to a simmer. Cook for 15-20 mins, or until the vegetables are soft.
Blend the sauce until smooth with a stick blender.
Add the mince and cook on a medium heat until the mince is heated through.
Make the white sauce
While your bolognaise sauce is cooking, prepare the white sauce.
Mix the milk and the stock together in a jug.
Melt the spread in a saucepan, then add the flour and stir until it make a smooth paste.
Gradually add the liquid, a little bit at a time, stirring all the time, letting each bit be absorbed before adding any more.
Once all the liquid has been added, you should have a smooth sauce. Add the nutritional yeast and then cook for 5-10 mins more. Stand aside.
Construct the lasagne
In a dish, spread a small amount of white sauce (about a ladleful) across the bottom, then cover the base of the dish with a layer of lasagne sheets, breaking them to fit the space if needed.
Cover this with a layer of the bolognaise sauce, then cover that with a layer of white sauce and finally another layer of pasta sheets.
Repeat this process again, finishing with a layer of pasta sheets, and finally top with a layer of white sauce. Make sure you cover the entire top of the dish. You will have three layers of pasta and sauce.
Grate the vegan cheese over the top.
Bake in the oven for 30 mins until the pasta is completely soft all the way through (you can test this by push a sharp knife into the layers, if it goes in easily, its cooked).
Leave to stand for about 15 mins to firm up, then cut into portions and serve with a green salad or veg.
If you have any left over it will keep in the fridge for a few days, and is lovely cold the next day too! It also freezes well, so you can cut into portions and save for a quick delicious mid week meal anytime.