01 - Preheat the oven to 375°F.
02 - Heat a splash of olive oil in a medium skillet over medium heat. Sauté minced garlic for 30 seconds until fragrant. Add spinach and cook until wilted, about 2 minutes. Remove from heat and allow to cool slightly.
03 - In a large mixing bowl, blend cream cheese, sour cream, and mayonnaise until smooth.
04 - Fold in sautéed spinach, chopped artichokes, mozzarella, Parmesan, salt, black pepper, and crushed red pepper flakes if using.
05 - Spread the mixture evenly in a 1-quart baking dish.
06 - Bake for 20 to 25 minutes until hot and bubbling with a lightly golden top.
07 - Serve warm alongside tortilla chips, sliced baguette, or fresh vegetable sticks.