Souffléed Spinach Omelet - Delicious Living

Ingredients

• 1 pound baby spinach leaves
• 2 tablespoons extra-virgin olive oil, divided
• 1 small yellow onion, finely chopped
• 1/2 teaspoon sea salt
• 1/2 teaspoon freshly ground black pepper
• 1/2 teaspoon freshly grated nutmeg
• 1 cup freshly grated Gruyère or Parmesan cheese (freshly grated)
• 8 eggs, separated
• 1 whole egg