-
Bring a pot of water to the boil.
-
Blanch the prepared vegetables (broccoli, zucchini, pepper, beans and cauliflower) for 2 minutes. Drain.
-
Heat a large non-stick frying pan over a medium-high heat. Add tomato puree, parsley and chilli sauce and simmer for 5 minutes.
-
Add prepared vegetables then remove pan from heat and set aside.
-
To make sauce: Place milk in a saucepan and heat over medium heat, stirring occasionally for 4-5 minutes or until almost boiling.
-
Stir in cornflour mixture and cook, stirring constantly, for 3-4 minutes or until sauce boils and thickens.
-
Stir in mustard and season to taste with black pepper.
-
To assemble: Line an ovenproof dish with 4 lasagna sheets. Top with one-third of the vegetable mixture and one-third of the sauce. Repeat layers, finishing with a layer of sauce. Combine Parmesan and Cheddar cheeses and sprinkle over top of lasagna.
-
Bake for 30 minutes or until lasagna sheets are soft.