This easy Zucchini Casserole is a combination of tender zucchini, aromatic onion, and a cheesy Bisquick topping. It's the perfect side dish anytime, especially when you have an abundance of zucchini.
Preheat oven to 375° F, and prepare a 9 X 13-inch baking dish by spraying it with cooking spray.
In a large mixing bowl, combine the eggs and oil, and mix well. Add in the zucchini, onions, cheese, Bisquick, parsley, salt, and pepper, and thoroughly combine.
Pour into the prepared baking dish and bake for 30 minutes.