Spinach flan

Our local pingo do this and it looks very good, but flamin' expensive.
I've tried to find some recipes, but they're all American
I'm guessing the timing will be same/similar to a normal flan and also temperature too. Also a bag of spinach, 2/3 eggs, fried onion and creme fraiche, all mixed together.
Any thoughts?
I've tried to find some recipes, but they're all American



I'm guessing the timing will be same/similar to a normal flan and also temperature too. Also a bag of spinach, 2/3 eggs, fried onion and creme fraiche, all mixed together.
Any thoughts?