Take a muffin pan that yields 4 to 6 muffins. Rub each tin with coconut oil to prevent sticking. Evenly spread spinach, garlic cloves, and scallions between each tin. In a separate bowl, whisk the eggs, oregano, salt, and pepper. Pour the egg mixture into each muffin tin. Bake for 7 to 10 minutes. Turn off the heat, then let it sit in the oven for about 5 minutes.