01 - Preheat the oven to 350°F. Lightly grease a 12-cup muffin tin with nonstick spray or line with silicone liners.
02 - Combine cottage cheese, eggs, cheddar cheese, Parmesan, salt, pepper, and garlic powder in a blender. Blend until completely smooth and creamy.
03 - Place chopped spinach, bell pepper, green onions, and any optional add-ins in a mixing bowl.
04 - Pour blended egg mixture over vegetables and fold gently until evenly distributed.
05 - Divide mixture evenly among prepared muffin cups, filling each approximately 3/4 full.
06 - Bake for 22 to 25 minutes until centers are firm and tops are lightly golden.
07 - Let cool for a few minutes in the tin, then remove carefully. Serve warm or at room temperature.