Step 6: Assemble & bake the pie
- mashed potato topping
- meat mixture
Preheat the oven to 425°F/218°C.
Add the mashed potato topping to the top of the meat mixture in the cast iron pan.
- Smooth out the top of the potatoes with a spatula.
Rough up the top of the pie by dragging a fork over the top of it. This will create nooks and crannies that will brown up as it bakes.
Sprinkle the rest of the gruyere on top and slide it into the oven. for around 20 minutes, or until the top has a light browning.
Let it cool for around 20 minutes for easier serving. Garnish with pickled onions. Enjoy!