Vegetable Pizza Frittata - cooking recipe

Ingredients

1 tablespoon olive oil
3/4 cup thinly sliced white onion
3 eggs
5 egg whites
1 1/2 cups coarsely chopped spinach
1/3 cup finely shredded reduced-fat Parmesan cheese
2 tablespoons minced fresh parsley
1/2 teaspoon salt
1/4 teaspoon dried basil
1/4 teaspoon dried oregano
ground black pepper to taste
2 roma (plum) tomatoes, thinly sliced
8 black olives, pitted and sliced

Preparation

Set oven rack 3 to 6 inches from the heat source and preheat the oven's broiler.
Heat olive oil in a 10-inch oven-proof skillet over medium heat; cook and stir onion until soft and transparent, about 5 minutes.
Beat eggs, egg whites, spinach, Parmesan cheese, parsley, salt, basil, oregano, and black pepper together in a bowl; pour over onions. Cook over low heat, gently lifting with a spatula and tilting skillet to let liquid run under cooked parts, until partially cooked, about 10 minutes. Arrange tomatoes and black olives on top of semi-soft frittata.
Broil frittata in preheated oven until slightly browned on top, about 5 minutes. Cut into wedges.