Preheat oven to 400 degrees and prepare an 8 x 8 glass pan by spraying it with non-stick cooking spray.
Follow the instructions on the box and make your Jiffy Cornbread.
Let your Cornbread cool to room temperature.
Once cool, crumble your cornbread and put it in a large bowl.
Preheat your oven to 350 degrees.
Chop your celery and onion into small pieces, and mince your garlic.
Melt your butter in a skillet or pan, add your celery, onion, and garlic and saute for 4-5 minutes. As it sautees, add your salt and pepper. Then set aside to cool slightly
In a separate bowl, whisk together your broth, eggs, sage, and thyme until well blended.
Pour both the mixture from your bowl and your sauteed vegetables over your crumbled cornbread and stir well to combine.
Pour your completed mixture into a prepared (with non-stick cooking spray) casserole dish, and sprinkle some parsley flakes on top for garnish.
Place your casserole dish in the oven and cook uncovered for 40-45 minutes, or until a light golden brown on top.