Preheat the oven to 350 degrees F. Prepare a 12 count muffin wipanth olive oil or cooking spray.
Add the eggs, cottage cheese, kosher salt and ground black pepper to a large blender. Blend on medium speed until fully mixed. Alternatively you can also whisk the ingredients together in a large bowl if you son't have a blender.
Divide the spiniach and feta equally among the muffin pan cups. Add 1/4 cup of the egg mixture to each cup, top off each muffin tip with any remaining egg mixture. Top with additional feta cheese if desired.
Bake the egg bites for 18 minutes or until they are set. Allow the egg bites to cool in the muffin tin for 5 minutes before removing. Serve as desired.