Preheat your oven to 375°F (190°C) and lightly grease a small oven-safe baking dish with a touch of olive oil.
Finely dice the red bell pepper and slice the green onions.
Heat the olive oil in a skillet over medium heat. Add the bell peppers and sauté for 3-4 minutes until softened.
Add the baby spinach to the skillet and cook just until wilted, then remove from heat and let cool slightly.
In a large mixing bowl, whisk together the egg and egg whites until well combined.
Stir in the cottage cheese, sea salt, black pepper, and garlic powder until the mixture is uniform.
Fold the sautéed vegetables, green onions, and crumbled feta cheese into the egg and cottage cheese mixture.
Pour the mixture into the prepared baking dish and spread it evenly.
Bake for 30-35 minutes, or until the center is set and the top is lightly browned and bubbly.
Allow the bake to rest for 5 minutes before slicing and serving.