Preheat the Oven:

1. Preheat your oven to 375°F (190°C).
2. Lightly grease a baking dish (approximately 8×8 inches or similar size) with cooking spray or oil.

Prepare the Egg Mixture:

1. In a medium bowl, whisk together the eggs, cottage cheese, salt, and black pepper until fully combined. Set aside.

Assemble the Tortilla Base:

1. Lay the tortilla flat in the prepared baking dish. It should cover the bottom of the dish and create a “crust” for the egg bake.

Choose Your Flavor Combination:

1. For Option One: Spread diced tomatoes, green peppers, and spinach over the tortilla. Pour the egg mixture over the vegetables and sprinkle mozzarella cheese evenly on top.
2. For Option Two: Layer diced tomatoes, olives, red onions, and spinach on the tortilla. Pour the egg mixture over the veggies and top with feta and mozzarella cheese.
3. For Option Three: Sauté the shallots and spinach in a small pan over medium heat until the spinach is wilted and the shallots are softened (about 3 minutes). Spread the sautéed mixture over the tortilla. Pour the egg mixture over and sprinkle with crumbled feta and mozzarella cheese.

Bake:

1. Place in the preheated oven and cook for 20 to 25 minutes, or until the eggs are firm and the cheese is bubbly and lightly browned.
2. You can check doneness by inserting a toothpick in the center—if it comes out clean, it’s ready.

Serve:

1. Let the egg tortilla bake cool for a couple of minutes before slicing and serving. Garnish with extra herbs or cheese if desired. Serve hot, with a side of salsa or avocado for extra flavor.