Easy Cheesy Egg Muffins

credit: http://www.popsugar.com/food/Easy-Egg-Cheese-Muffin-Recipe-37754806

INGREDIENTS

1 dozen eggs
1/2 teaspoon sea salt
Ghee or nonstick cooking spray, to coat pans
1 cup frozen or fresh spinach
1 heaping cup thinly sliced mushrooms or whatever veggies you like
1/4 cup thinly sliced green onion
1 1/2 to 2 cups shredded cheese (either cheddar or parmesan)* optional*

DIRECTIONS

1. Preheat the oven to 350°F. Crack eggs into a liquid measuring cup. Whisk the eggs and salt.
2. Grease a 12-cup muffin pan with ghee. Divide spinach, mushrooms, green onion, and cheese between each muffin cup, then carefully pour eggs over tops until muffin tins are almost full (leave 1/4-inch space).
3. Bake for 20-25 minutes or until a wooden pick inserted in the center of a muffin comes out clean. The egg muffins will look like soufflé when they come out of the oven, but they will sink after a few minutes. Let them rest in the muffin tin for a few minutes before using a rubber spatula to carefully remove each muffin.
4. Consume immediately or let cool and transfer to a resealable plastic bag. Refrigerate for up to a week or freeze for a month.