01 -
Set your oven to 375°F (190°C) to preheat.
02 -
In salted boiling water, cook shells until just tender. Drain and leave them to cool a bit.
03 -
Cook the beef in a pan on medium heat until browned. Stir in garlic and oregano, cook a little longer till fragrant, then take off the heat to cool slightly.
04 -
In a mixing bowl, blend the cooled beef with ricotta, 1 cup of mozzarella, Pecorino Romano, the egg, plus a pinch of salt and pepper. Mix it all together.
05 -
Spoon 1 cup of the tomato sauce evenly onto the base of a baking dish.
06 -
Put the ricotta-beef filling into each cooked shell and arrange them snugly in the dish.
07 -
Pour the remaining 1 ½ cups of sauce over the stuffed shells. Sprinkle the rest of the mozzarella across the top.
08 -
Cover with foil and bake for 25 minutes. Take the foil off, then bake another 10 minutes or till the cheese is bubbly and golden.
09 -
Scatter the parsley on top before serving it warm.