Vegetable Bread Pudding – Fustini's Oils & Vinegars

Ingredients

• 2-3 tablespoons Fustini's Tuscan Herb olive oil, plus more for greasing
• 1 small onion, diced
• 1 cup mushrooms, sliced
• 2/3 cup celery, diced
• 2/3 cup heirloom carrots, diced
• 2 cups spinach, roughly chopped
• 2 tablespoons Fustini's Herbs of Naples balsamic
• 6 large eggs
• 1 1/2 cup heavy cream
• 1 tablespoon Fustini's Tuscan spice blend
• salt and pepper to taste
• 1 loaf sourdough bread, day-old, cut into 1-inch squares
• 2 cups Swiss or Gruyere cheese, shredded