Preheat oven to 350° Fahrenheit. Grease cups of muffin pan with neutral cooking spray, making sure to coat sides of cups.
Crack 8 large eggs directly into blender. Add ¾ cup cottage cheese, ¼ teaspoon salt of choice, ¼ teaspoon salt, and freshly cracked black pepper.
Secure lid on blender. Blend ingredients together until mixture is completely smooth. Set blender aside.
Divide mix-ins of choice evenly between cups of muffin pan. Note: consider reserving small amounts of mix-ins to sprinkle on top of egg mixture.
Pour blended egg mixture into cups of muffin pan, filling each cup by approximately 75%. Garnish top of each egg cup with reserved mix-ins if desired.
Place filled muffin pan in center of preheated oven. Bake egg bites 10 minutes, then check doneness. Continue baking egg bites, checking every 2 minutes, until egg mixture is just set. Note: cooking times will vary depending on pan type, oven, amount of mix-ins, and type of mix-ins.
When egg bites have set, carefully remove muffin pan from oven. Let egg bites cool slightly, then remove egg bites from pan and serve as desired.