Preheat the oven to 180°C/Fan 160°C/Gas 4.
Layer a quarter of the sliced potatoes in a lightly buttered ovenproof dish, overlapping slightly, to cover the bottom and season with salt and black pepper.
Add a third of the onions, carrots and corned beef ensuring an even layer. Repeat twice more, creating three layers in total not forgetting
to season each layer. Add a final layer of potatoes, again overlapping slightly, season, pour over the beef stock and brush the top with the melted butter.
Lay a sheet of baking parchment or greaseproof paper on the potatoes and cover with tin foil; place in the preheated oven and cook for about 50 minutes.
Once the vegetables have started to soften uncover and cook until golden and the stock has reduced.
In a frying pan cook the smoked bacon over a medium-high heat for around 4–6 minutes or until crispy; remove and keep warm. Use the same pan to fry your eggs and cook to your preference (add a little more oil if necessary).
Serve the panacalty with a fried egg, crispy bacon and chopped parsley on top, and crusty bread and butter on the side.
Cook's Tip: Make a vegetarian panacalty simply by omitting the corned beef (you can substitute it for sliced root veg) and swapping beef stock for veg stock.