Savory Vegetable Bread Pudding From 'The Beekman 1802 Heirloom Vegetable Cookbook'

• 2 tablespoons olive oil, plus more for the baking dish
• 1 tablespoon unsalted butter
• 3 large sweet onions (such as Vidalia or Maui) or Spanish onions, halved and thinly sliced (6 cups)
• 1/2 pound mushrooms, thinly sliced
• 3 large eggs
• 2 cups whole milk
• 1 cup heavy cream
• 11/2 teaspoons coarse (kosher) salt
• 1/2 teaspoon freshly ground black pepper
• 1/2 teaspoon crumbled dried sage
• 1 baguette (8 ounces), halved lengthwise and cut crosswise into 1-inch pieces
• 8 ounces Fontina cheese (preferably Italian), cut into 1-inch cubes

1. In a large, deep skillet, heat the oil and butter over medium heat. Add the onions and cook for 35 minutes, stirring occasionally, until golden brown and soft. Add the mushrooms and cook for 5 to 7 minutes, or until the mushrooms are tender.
2. Preheat the oven to 350u0b0F. Brush a 9 x 13-inch baking dish with oil.
3. In a large bowl, whisk together the eggs, milk, cream, salt, pepper, and sage. Add the bread, the onion mixture, and Fontina and stir to combine.
4. Pour the mixture into the baking dish, pressing so the bread is covered with liquid, and set aside to soak for at least 10 minutes, until the bread has absorbed most of the liquid.
5. Bake for 35 minutes, or until the bread is crisp and the custard is set. Serve hot or at room temperature.

olive oil, unsalted butter, sweet onions, mushrooms, eggs, milk, heavy cream, coarse, freshly ground black pepper, sage, baguette, cheese

Taken from www.seriouseats.com/recipes/2014/08/savory-vegetable-bread-pudding-from-the-beekman-1802-heirloom-vegetable-cookbook.html (may not work)