In a large pan, sauté spinach until cooked then place in a strainer to drain excess water.
2. Step
Melt butter and cook onion until soft. Whisk in flour. Make sure there are no lumps. Add cream and milk, then stir until thickened.
3. Step
Return spinach to mixture. Add salt, nutmeg and pepper, then stir until fully incorporated.
4. Step
Hollow out a sourdough bowl, line the hole with mozzarella cheese, then spoon creamed spinach in. Spoon a dip in the middle, then crack an egg in the dip so it doesn’t fall out of the bowl.
5. Step
Bake at 350˚F (175˚C) for 25 minutes, until the egg is set and the white has solidified.
