1 large loaf seeded hearth bread (about 1 1/3 pounds), cut into 3/4-inch cubes (about 12 cups total)
2 tablespoon olive oil
2 tablespoon unsalted butter
1 pound chopped white mushrooms
4 large shallots, chopped
3 celery stalks, chopped
1/3 cup chopped fresh parsley
1/3 cup chopped mixed fresh herbs such as sage, thyme, marjoram, and oregano
1 1/4 teaspoon salt
1/2 teaspoon black pepper
3 cup low-sodium vegetable broth
Directions
Spread bread cubes on two large baking sheets; let sit on the counter overnight, or bake in a 300-degree oven until just dried, about 15 minutes. Place in a large bowl.
In a large skillet, heat oil and butter over medium-high heat. Add mushrooms and cook, stirring frequently, until very tender, about 10 minutes. Stir in shallots and celery and cook 3 minutes longer. Stir in parsley, herbs, salt and pepper; remove from heat and spoon mixture over bread. Stir in broth and let sit a few minutes for it to be absorbed.
If using to stuff a turkey, cool completely and follow stuffing directions for your recipe. If baking separately, heat oven to 350 degrees. Spoon stuffing into a large buttered baking dish. Smooth the top and bake until browned and crisp, about 50 minutes.