Vegan Lentil lasagne

Easy Vegan recipe using cauliflower and soya milk for a white sauce and canned lentils as filling   Ingredients (4 servings): 1 tbsp olive oil 1 onion, chopped 1 carrot, chopped 1 celery stick, chopped 1 garlic clove, crushed 2 x 400g cans lentils, drained, rinsed 1 tbsp cornflour 400g can chopped tomatoes 1 tsp mushroom ketchup…