Zucchini and Bell Pepper Frittata

Description
This recipe came from an estate sale. I obtained it when I purchased the family collection from the Henson Estate in Dallas, Texas in 1982.
 * Contributed by Catsrecipes Y-Group

Ingredients
Zucchini and Bell Pepper Frittata

This Recipe Came From an Estate Sale. i Obtained it When i PurchasedThe Family Collection From The Henson Estate in Dallas, Texas in 1982.
 * 1/3 Cup Finely Chopped White Onion
 * 1 Cup Thinly Sliced zucchini
 * 1/2 Cup Finely Chopped Red bell pepper
 * 1/2 Cup Finely Chopped Green bell pepper
 * 1-1/2 Tablespoons olive oil
 * 4 Large eggs
 * 2/3 Cup Freshly Grated Parmesan
 * 2 Tablespoons Minced Fresh parsley Leaves

In 9-Inch Non-Stick Skillet Cook Onion, zucchini And peppers WithSalt And black pepper to Taste in 1 Tablespoon of The oil OverModerate Heat Stirring, For 10 Minutes. in a Bowl Whisk Together TheEggs, 1/3 Cup of The Parmesan And The parsley Then Add The VegetableMixture And Stir Until it is Combined Well. in The Skillet Heat TheRemaining 1/2 Tablespoon oil Over Moderate Heat Until it is Hot ButNot Smoking And Pour in egg Mixture Distributing The VegetablesEvenly And Cook Without Stirring For 10 Minutes. Sprinkle TheRemaining 1/3 Cup Parmesan Over The Top And Broil Frittata UnderPreheated Broiler About 4 Inches From Heat For 4 Minutes. Let CoolIn Skillet 5 Minutes Then Run Knife Around Edge. Slide Frittata onServing Plate And Cut Into Wedges. Serve Warm or at Room Temperature.