Vegan Spanakopita

Name: Vegan Spanakopita
Ingredients: 2 (10-ounce) packages chopped frozen spinach; 1/2 cup plus 1 tablespoon olive oil; 1 medium yellow onion, minced; 2 garlic cloves, minced; 2 cups crimini mushrooms, diced; 12 ounces firm silken tofu; 1 tablespoon fresh lemon juice; 1 teaspoon salt; 1/4 teaspoon freshly ground black pepper; 1/8 teaspoon ground nutmeg; 1 package phyllo pastry, thawed overnight in refrigerator