Preheat the oven to 180c (350F/160c Fan).
Bring a large pot of water to a rolling boil and salt generously.
Working in small batches, cook the lasagne sheets for 30 seconds before transferring onto a clean tea towel.
Once cool enough to handle, it’s time to assemble
for your base layer, start with a couple of spoonfuls of ragu on the base of your dish followed by a couple of dollops of besciamella, then a layer of pasta.
Next, add ragu, besciamella and a smattering of the grated cheeses (both mozza and parmigiano) – sometimes I like to also add slices of the mozzarella for extra cheesiness… this is of course optional.
top with another layer of pasta and repeat the process – pasta – ragu – besciamella – cheese – until you get to your last sheet.
Use what’s left of your ragu followed by a generous amount of besciamella (reserve some for this final layer!) – you want the pasta sheet fully covered. Cover with a whole heap of the cheeses.
Bake in the oven uncovered for around 70-80 minutes, then switch to the grill setting for a couple of minutes until the top is crispy and the edges are bubbling.
Allow the lasagne to cool for at least 15 minutes before serving.