Preheat the oven to 375°F and lightly grease a pie dish.
Whisk the eggs in a large bowl until smooth.
Stir in cottage cheese, spinach, milk, cheddar, salt, pepper, and garlic powder.
Pour the mixture into the prepared dish and smooth the top.
Bake for 35 to 40 minutes until set and golden at the edges.
Let cool slightly before slicing and serving.