1. Preheat oven to 350°. Combine the artichokes, mayonnaise, cream cheese, 1/2 cup Parmesan, 3/4 cup mozzarella, garlic salt, pepper, scallions, and parsley in a bowl; transfer to baking dish.
2. Top with remaining Parmesan and mozzarella; bake 20–30 minutes or until golden and bubbling.