Have oven heating to 350 degrees.
Beat 4 eggs to blend in a large mixing bowl. Add vegetable oil, Bisquick, along with onion, cheese, chopped parsley, and salt and pepper to taste.
Toss in the zuccini, mix well, and pack into a greased casserole dish and bake at 350 degrees for 40 minutes.
Pulled from a recipe by Elizabeth Coblentz, "The Amish Cook". She is no longer among the living. Her daughter took over her column. Don't know if it is still functioning, but the mailing address used to be
The Amish Cook, c/o Oasis Newsfeatures
P.O. Box 2144
Middletown, Ohio 45042.
and there's currently a website at http://www.oasisnewsfeatures.com/category/the-amish-cook-column/.