Ingredients

  • 1 large yellow onion, diced
  • 250 g frozen spinach
  • 2 tomatoes, chopped
  • 2 garlic cloves
  • olive oil
  • 7 large eggs
  • 2 tablespoons milk
  • 1 tablespoon oregano
  • 12 teaspoon crushed red pepper flakes
  • 14 teaspoon fresh ground black pepper
  • 12 teaspoon salt
  • 12 cup black olives, pitted & halved
  • 1 14 cups grated gouda cheese (any strongly-flavored hard cheese)
  • 14 cup grated gouda cheese (any strongly-flavored hard cheese)

Method

  • Turn on broiler to high.
  • Dice & cook onion in a small amount of oil until clear.
  • Set aside.
  • Cook spinach in a small amount of water until partially thawed.
  • Add chopped tomato and cook until most of the liquid has been driven off.
  • While you let the spinach & tomato cook, mix eggs, milk, garlic, salt, pepper, crushed red pepper, and oregano with a whisk in a bowl.
  • Add onions, olives, and (eventually) spinach & tomato mixture.
  • Mix in 1 1/4 cup grated cheese.
  • Add oil and egg mixture to a deep large frying pan.
  • Cook over low/medium heat about 15 minutes, until bottom and side of frittata are firm.
  • Scatter last 1/4 cup cheese over the top.
  • Cover handle with foil and transfer to broiler.
  • Broil until top is cooked and browned, about 10 minutes.