Sourdough Stuffing with Caramelized Onions and Mushrooms

Ingredients (13)

• 16 ounce loaf sourdough bread cut into 1/2-inch cubes
• 3 tablespoons olive oil divided
• 2 large yellow onions chopped medium
• 1 1/2 pounds white mushrooms cleaned and sliced
• 3 stalks celery chopped
• 2 tablespoons fresh thyme or rosemary, finely chopped
• 2 tablespoons fresh sage chopped
• 2 cups low-sodium vegetable broth
• 1 large egg beaten
• ⅔ cups fresh parsley chopped
• 1 1/4 teaspoons kosher salt divided
• ⅛ teaspoon black pepper
• olive oil spray