2.
Grease a deep dish with 1 tbsp olive oil.
3.
Mix the eggs together with salt and pepper.
4.
Add the celeriac, onion and egg mixture into the dish, and mix to combine.
5.
Use a fork or spoon to push down to get a tight mixture and flat top.
6.
Drizzle 2 tbsp olive oil over the top of the celeriac mix.
7.
Place in oven for about an hour, when the top should be brown and crispy, but not burning.