Heat oven to 180C/fan/160C/gas 4 and lightly oil an ovenproof dish (about 30 x 20cm).
In a bowl, mix together the Colman’s Bolognese Recipe Mix with the water, then mix through the lentil and mince mix. Stir in the tinned tomatoes.
Prepare the white sauce, by mixing the Colman’s White Sauce Mix with the milk in a pan, bringing to the boil stirring continuously. Then simmer for 2 minutes.
Spoon one third of the meat and lentils into the dish, then cover with some lasagne sheets. Drizzle over 1/3 of the Colman’s White Sauce Mix.
Repeat until you have 3 layers of pasta, making sure you can’t see any pasta poking through.
Scatter torn mozzarella over the top.
Bake for 45 mins until the top is bubbling and lightly browned.