01 - Preheat the oven to 375°F.
02 - In a large mixing bowl, blend the cream cheese, sour cream, and mayonnaise until smooth and creamy.
03 - Fold in the spinach, artichoke hearts, minced garlic, mozzarella, and half of the Parmesan cheese.
04 - Add salt, black pepper, and nutmeg if desired. Stir thoroughly to combine.
05 - Transfer the mixture into a medium baking dish. Smooth the surface and sprinkle remaining Parmesan evenly on top.
06 - Bake for 20 to 25 minutes until bubbling and golden on the surface.
07 - Allow to cool for a few minutes before serving warm with toasted baguette slices, pita chips, or fresh vegetables.