Heat Oven To 375 Degrees F. Brown Meat In Large Skillet; Drain. Mix Potatoes, Cream Cheese, 1/2 Cup Shredded Cheese And Garlic Until Well Blended. Combine Meat, Vegetables And Gravy; Spoon Into 9-Inch Square Baking Dish. Cover With Potato Mixture And Remaining Shredded Cheese. Bake 20 Min. Or Until Heated Through.