Preheat oven to 350 degrees F. & spray a 9 inch pie pan with nonstick cooking spray. In a large bowl, combine eggs and Bisquick.
Add vegetable oil, cheese, oregano, basil, salt & pepper. Stir well. Fold in the sliced zucchini & onions (reserving a few slices of zucchini for the top of your quiche).
Pour the batter into the prepared pie pan. Top with the reserved zucchini slices. Bake for approximately 30-35 minutes, or until the top of the quiche is a golden brown and middle is no longer wet.
Remove and allow to sit in pie pan for 10 minutes before slicing and serving so it can further set.