Ingredients (serves 6):

For the cheesy sauce:

500ml whole milk

2 tbsp butter

2 tbsp plain flour

1/2 cup grated parmesan cheese

Salt and pepper

For the lasagne:

Lasagne sheets (enough to cover your dish for four layers)

200g cooked ham (thickly sliced) or smoked streaky bacon lightly fried

400g baby spinach

200g ricotta cheese

Handful pine nuts

½ tsp freshly grated nutmeg (more flavoursome than powdered nutmeg)

1 ball mozzarella

Extra grated parmesan for sprinkling on top