Preheat oven to 350°. In a large bowl, combine the first 10 ingredients. Add turkey; mix lightly but thoroughly. Shape into two 7-1/2 x 4-1/2-in. loaves. Place in a greased shallow baking pan.
Bake 1 hour. Mix together topping ingredients; spread over loaves. Bake until a thermometer reads 165°, 10-15 minutes longer. Let stand 10 minutes before slicing.
Freeze option: Bake meat loaves without sauce. Securely wrap and freeze cooled meat loaves in foil. To use, partially thaw in refrigerator overnight. Unwrap meat loaves and place in a greased shallow baking pan. Prepare topping as directed; spread over meat loaves. Reheat meat loaf in a preheated 350° oven until heated through and a thermometer inserted in center reads 165°. Let stand 10 minutes before slicing.