Move oven rack to middle position and preheat to 375 degrees F. Lightly grease 8x8-inch baking dish with nonstick cooking spray; set aside.
Place garlic in small bowl and cook in microwave 30-60 seconds, or until fragrant. In a large mixing bowl combine garlic, spinach, artichoke hearts, and alfredo sauce. Add 1 cup mozzarella, Parmesan, cream cheese, and Worcestershire sauce; stir to combine.
Pour mixture into prepared baking dish, cover with foil, and bake for 20 minutes. Remove foil, sprinkle 1/4 cup remaining Mozzarella over top, and bake, uncovered, for 10 more minutes or until mozzarella is lightly golden. Let dip cool 5 minutes, and then top with garnishes and serve!