01 - Preheat oven to 375°F.
02 - Combine softened cream cheese, sour cream, and mayonnaise in a large mixing bowl. Beat until completely smooth and creamy.
03 - Fold in mozzarella, Parmesan, well-drained spinach, chopped artichoke hearts, minced garlic, salt, black pepper, and red pepper flakes. Mix until evenly distributed.
04 - Spread mixture evenly into an 8x8-inch baking dish.
05 - Bake for 25 minutes until bubbly and lightly golden on top.
06 - Serve immediately with tortilla chips, sliced baguette, or fresh vegetable crudités.