Boil spinach in a pot of water, drain, and cut into 2cm pieces. Thinly slice the onion.

Cut bacon into 1cm strips.

Heat salad oil in a frying pan, cook bacon until slightly crispy, then add spinach and onion. Sauté until onion softens, then remove from heat.

In a bowl, mix heavy cream, eggs, salt, pepper, nutmeg, and shredded pizza cheese until well combined.