If you haven't already, make a batch of my oat flour corn bread. Let it cool while you prepare the rest of this dish.
Preheat your oven to 375 degrees and grease an 11x13 inch baking dish.
To start, butter each slide of bread from your loaf and place them on a baking sheet. Toast them in the oven for about 15 minutes (flip half way through). Or cook until slightly crispy. Remove from the oven and set aside.
Meanwhile, melt 1/2 cup of butter in a large saucepan on the stove. Add in the chopped onion and celery and sauté for 5 minutes. Then add in the seasonings: parsley, sage, thyme, salt and pepper. Mix until combined and remove from the heat.
Crumble up your toasted bread and corn bread in the greased 11x13 inch baking dish.
Pour the sautéed onions, celery and seasonings on top of the bread and cornbread. Mix until combined.
In a medium bowl whisk together the eggs, broth and half and half. Whisk until smooth. Pour this mixture over the bread mixture and mix carefully until fully combined.
Cover the pan with foil and bake at 375 degree oven for 30 minutes. Remove the foil and bake for another 20 minutes uncovered until the top is slightly crispy and brown.
Remove from the oven and enjoy!