Remove the pan from heat and deglaze with the dry sherry. Place back on the heat, add the thyme and rosemary, and continue to cook over medium high heat until the liquid has evaporated. 2-3 more minutes. Season with salt and pepper to taste.
In large mixing bowl, combine bread cubes with broth, eggs and vinegar, add mushroom mixture and parsley; mix well. Let it rest 20 minutes for the bread to absorb the stock. You may want to add more if too dry. Transfer into a baking dish.
Bake uncovered for about 30-40 minutes. Check after 30 min to check the dryness. You shouldn’t need anything at this point, Keep baking until nice and brown on the top.