Gather all ingredients. Preheat the oven to 350 degrees F (175 degrees C). Lightly grease a small baking dish.

Mix cream cheese, mayonnaise, Parmesan cheese, Romano cheese, garlic, basil, garlic salt, salt, and pepper together in a medium bowl.

Gently stir in artichoke hearts and spinach.

Transfer the mixture to the prepared baking dish; top with mozzarella cheese.

Bake in the preheated oven until bubbly and lightly browned, about 25 minutes.