Melt the butter in a saucepan.
Add the chopped spinach, cook for 2 minutes, until wilted.
Add salt, pepper, garlic and nutmeg.
Add the cream cheese, with the heat on low, using a wooden spoon or spatula, incorporate the cream cheese into the spinach.
Add the cream.
Add the artichoke hearts.
Mix in 1/2 of the mozzarella cheese.
Transfer to a small oven safe baking dish.
Top with the remaining mozzarella and parmesan cheese.
Bake for 20-15 minutes, until the cheese is bubbly.
Serve.