Step 1

Preheat your oven to 375°F (190°C). Grease a 9x9 inch baking dish.

Step 2

Heat olive oil in a skillet over medium heat. Add the chopped onion and sauté until translucent.

Step 3

Add the spinach and cook until just wilted. Remove from heat and spread evenly in the prepared baking dish.

Step 4

In a bowl, whisk together eggs, milk, salt, pepper, and optional spices. Stir in the shredded cheese.

Step 5

Pour the egg mixture over the spinach and onions in the baking dish.

Step 6

Bake for 35 minutes or until the eggs are set and the top is lightly golden.

Step 7

Let it cool for a few minutes before slicing and serving.