Making Baked Spinach Dip is simple and straightforward. Follow these steps to create this delicious appetizer:

1. Preheat Oven: Preheat your oven to 350°F (175°C).
2. Prepare Spinach: In a pan, sauté the chopped spinach over medium heat until wilted. Drain any excess liquid.
3. Mix Ingredients: In a large mixing bowl, combine the softened cream cheese, sour cream, mayonnaise, minced garlic, onion powder, salt, black pepper, and crushed red pepper flakes (if using). Mix until smooth and well blended.
4. Add Cheeses: Stir in the shredded mozzarella and grated Parmesan cheese to the mixture.
5. Fold in Spinach: Gently fold the sautéed spinach into the creamy mixture until thoroughly combined.
6. Transfer to Baking Dish: Pour the spinach dip into a greased baking dish, spreading it evenly.
7. Bake: Place the dish in the preheated oven and bake for 25 minutes or until the dip is hot and bubbly.
8. Serve Hot: Remove from the oven and let cool slightly before serving.

These steps will guide you in creating this incredible baked spinach dip effortlessly.