Preheat oven to 350 degrees. Butter, well, a 9- x 13-inch baking dish; set aside.
Tear the toast into small bite-sized pieces and put them in the bowl with the cornbread.
Please note: The vegetables in this dressing will only soften a little bit while baking in the dressing. If you do not like softly crunchy vegetables in your dressing, precook the onions and celery in a little butter over low heat until the onions are translucent.
Add the chopped onions, celery, herbs and salt and pepper into the bread mixture. It is best to toss these ingredients lightly together with your hands before adding the chicken broth. The photo tutorial in the blog post does not address this, but in the long run it is an easier way to go.
Mix the broth, eggs, and melted butter together. Pour the chicken broth mixture over the cornbread mixture. Toss together with a large mixing spoon just until all of the mixture is wet. Fresh, just cooled cornbread will probably not require as much liquid as does a drier recipe or day old cornbread. The dressing at this point should be very, very moist, just short of soupy. It should not look like the more traditional dressings/stuffings you may be used to seeing. If it is too dry, add more chicken broth, up to 1 cup.
Pour into prepared baking dish. Bake, uncovered, for about 45 minutes until the dressing is set. It may require additional baking time, if the dressing is not quite set. A little bit of "jiggling" is normal when the dressing is moved. However, it should hold its shape and look "dry" on top and a rich golden brown. The internal temperature of the dressing should be at least 165-degrees F. It is fine if the internal dressing temp goes up into the 180's.