Preheat the oven to 350°F. Coat the inside of a pie plate with nonstick cooking spray.
Add 1 cup bisquick mix, 1 teaspoon garlic powder, ½ teaspoon onion powder, 1 teaspoon dried thyme, ½ teaspoon dried parsley, ½ teaspoon salt and ¼ teaspoon ground black pepper to a large mixing bowl. Mix together.
In a separate medium bowl whisk together 4 eggs and ½ cup vegetable oil.
Pour the wet ingredients into the dry ingredients and stir together.
Add 1 cup shredded cheddar cheese, ½ cup grated parmesan cheese, ½ cup chopped yellow onion, and 1 chopped green onion and mix together again.
Add 1 ½ cups sliced zucchini and stir until zucchini is coated with the batter, making sure the slices aren’t sticking together.
Pour the zucchini mixture into a greased pie dish and smooth out with a spatula. Arrange the zucchini on top in a pleasing display. Sprinkle the top with 2 tablespoon grated parmesan cheese.
Bake covered with foil for 30 minutes, then remove foil and bake an additional 15-20 minutes, or until zucchini slices are tender and edges are golden brown. A toothpick should come out clean when poked through the center.
Let cool for 10 minutes then use a sharp knife to cut into slices and enjoy!
Recipe Notes:
Leftover zucchini pie can be stored in an airtight container the fridge for up to 4-5 days. It’s easy to reheat a slice in the microwave for 1 minute to heat and serve.
Be sure to slice the zucchini into thin strips. This will ensure they cook evenly in the recipe.
Chop the onion into small bite-size pieces. You don’t want large chunks.
Zucchini slices will stick together. Try to separate the large clumps of zucchini as you mix them with the batter.
Save time and money by using a grated parmesan shaker, it adds great flavor! Or you can use freshly grated parmesan cheese if preferred.
Swap the cheddar cheese for any other favorites including marble, mozzarella, monterey jack or swiss.