Creamy Chicken Enchiladas with cumin

1 large onion , chopped 4 tablespoons butter or 4 tablespoons margarine 3 cups shredded cooked chicken 1 1/2-2 cups salsa or 1 1/2-2 cups picante sauce,[...]

1 (8 ounce) package cream cheese , softened 2 tablespoons water 2 teaspoons onion powder 2 teaspoons ground cumin 1/2 teaspoon salt 1/4 teaspoon pepper 5 cups[...]

1/2 lb chicken breast , skinless and boneless 4 cups spinach , torn fresh or 10 ounces frozen spinach , chopped thawed and drained 1/4 cup scallion , sliced 8[...]