Hearty Bolognese Pie

• Melt the butter in a large deep frying pan over medium-high heat. Fry the onion, celery leaves, carrot and Romano pepper with a pinch of salt for 6 - 8 minutes until soft.
• Add the mince and fry for 2 more minutes, separating it as you do so.
• Deglaze with the balsamic vinegar, then add the chopped tomatoes, the Italian seasoning and the bay leaf.

• Season to taste with salt and pepper, then allow to reduce for 9 - 11 minutes (see Tip).
• Transfer the pastry in its baking paper to an oven dish or baking tin.
• Pierce the surface of the pastry several times with a fork, then fill the pastry with the bolognese sauce.

Tip: if the sauce is still too watery, increase the heat and allow to simmer further as needed.