I like to make pasta dough from scratch and roll it out myself for this dish, but shop-bought fresh sheets will work just as well, if you prefer. Simply blanch them in a pan of boiling water for 20 seconds before using.
Swap out the spinach for whatever greens you’ve got: think chard, kale, rocket or a mixture.
If you’re out of Parmesan, just swap in a bit of Cheddar cheese instead.
I’ve used passata here, but tinned plum or cherry tomatoes would be absolutely fine.