Preheat your oven to 375°F (190°C) and lightly grease a pie pan.

In a skillet over medium heat, sauté the chopped onion until translucent (about 5 minutes), then add minced garlic and sauté for an additional minute.

In a large bowl, whisk together the eggs and cottage cheese until frothy. Stir in the sautéed onion-garlic mixture, chopped spinach, grated cheddar cheese, salt, and pepper.

Pour the mixture into the prepared baking dish, spreading it evenly.

Bake for 30-35 minutes until the center is set and the top is golden brown.

Allow cooling slightly before slicing; serve warm or at room temperature.