Homemade Sausage Pie

Heat a little olive oil in a skillet and brown the sausage slowly so the fat renders well.

Increase the heat, add the onion to the skillet, and cook until softened.

Add the day-old bread to the sausage mixture and turn off the heat.

Vigorously mix the sausage/onion with the bread until all the liquid has been absorbed by the bread.

Set the bread mixture aside, and in a separate bowl, prepare a mixture with milk, eggs, half of the cheese, and pepper.

Transfer the sausage and bread mixture to a baking dish, spreading it evenly as the base layer.

Pour the liquid mixture (milk, eggs, etc.) over the sausage layer in the baking dish.

Cover the surface of the pie with the remaining Parmesan cheese.

Bake in a preheated oven at 320°F (160°C) until the pie puffs up and the topping is golden brown.