Preheat oven 300 and bake bread cubes at 300 on a baking sheet to crisp up, about 15 mins.
Pour into a bowl and drizzle on the melted butter.
Cook sausage until browned and transfer to the bowl with a slotted spoon.
Add leeks, onions, celery to the sausage drippings (may need to add butter to skillet) and cook 8 mins. Add herbs.
Add the veggies to the bread and add the eggs.
Add broth and place into greased 13x9x2 dish.
Bake covered at 350 40 mins. Then uncover 5 mins.