How to Make It
Preheat oven to 400°F. Stir together cream cheese, Gouda, mozzarella, spinach, artichoke hearts, scallions, mayonnaise, garlic, salt, and cayenne pepper in a medium bowl until smooth. Spoon into a 1-quart baking dish; sprinkle top evenly with Parmesan. Bake in preheated oven until browned and bubby, about 25 minutes. Serve with crostini or tortilla chips.