Preheat the oven to 350℉. Then grease your muffin tin with cooking spray.
In a bowl, add the eggs, cottage cheese, shredded cheese, garlic powder, salt, and pepper. Whisk until smooth. For a more velvety texture, use a blender or food processor and blend under smooth. Set it aside.
In a cooking pan, heat 1 tbsp of cooking oil over medium heat. Add onion and red bell pepper. Cook for 1-2 minute until soft. Then add chopped turkey slices and spinach. Sauté for a few minutes until spinach is just wilted. Turn off the heat and remove excess water from the veggie mix.
Evenly distribute the veggie mixture between 12 muffin cups. Then pour the egg mixture evenly into muffin cups (about 3/4 full).
Bake on the middle rack for about 30 minutes, or until the eggs are set. Let the egg bites cool slightly, remove, and enjoy!