1. Microwave spinach in a large, microwave-safe bowl at HIGH 3 minutes or until wilted. Drain spinach well, pressing between paper towels. Chop spinach.
2. Melt butter in a nonstick skillet over medium-high heat. Add cream cheese and garlic; cook 3 to 4 minutes, stirring constantly, until cream cheese melts. Fold in spinach, artichokes, sour cream, and 1/4 cup mozzarella cheese; stir until cheese melts.
3. Transfer mixture to a 1-qt. shallow baking dish. Sprinkle with remaining 1/4 cup mozzarella cheese.
4. Bake at 350° for 15 minutes or until hot and bubbly. Serve immediately with fresh pita wedges or baked pita chips.
Note: Thoroughly wash bagged spinach before using.
Note: Nutritional analysis does not include pita wedges or baked pita chips.