1. Take 8 of the 12 slices of bread, and tear them into small pieces. Place the pieces in a food processor or blender, and process into coarse crumbs. Measure the crumbs. There should be 4 cups. (Adjust the amount if necessary.)
2. Take the remaining 4 slices of bread, and cut the bread into 1/2-inch cubes. Measure the cubes. There should be 4 cups. (Adjust the amount if necessary.)
3. Place the bread crumbs and cubes in a large bowl, and add all of the remaining ingredients except for the chicken broth. Toss to mix well. Slowly add the broth as you continue tossing.
4. Coat a 2-quart casserole dish with nonstick cooking spray. Loosely spoon the stuffing into the dish, and bake uncovered at 325°F for 45 minutes to an hour, or until heated through and lightly browned on top.