Prep: Preheat oven to 375°F (190°C) and lightly grease a 9-inch baking dish.
Mix Base: In a large bowl, blend the cream cheese, mayonnaise, and sour cream until smooth.
Add Ingredients: Stir in the crab meat, mozzarella, cheddar, garlic, green onions, Worcestershire sauce, soy sauce, lemon juice, garlic powder, and black pepper until fully combined.
Bake: Transfer the mixture to the baking dish and spread evenly. Bake for 20-25 minutes or until bubbly and golden.
Garnish & Serve: Sprinkle with parsley and red pepper flakes (if using) and enjoy warm with tortilla chips, crackers, or fresh veggies.