Begin by preheating your oven to 375°F (190°C) and lightly greasing a 9-inch pie dish.
In a large bowl, whisk together the eggs, Parmesan cheese, oil, parsley, minced garlic, salt, and pepper until well combined.
Fold in the sliced zucchini and chopped onion, ensuring they are evenly coated with the egg mixture.
Gradually mix in the biscuit baking mix until the mixture is smooth and homogeneous.
Carefully pour the batter into your prepared pie dish, smoothing the top to ensure an even layer.
Bake in the preheated oven for 30-35 minutes, or until the pie is golden brown on top and set in the center.
Allow the pie to cool for a few minutes before slicing. This resting period makes it easier to cut and serve.
Whether you’re presenting it as a main dish or a complementary side, Zucchini Onion Pie is a delightful way to enjoy the simple pleasures of good food. Its blend of tender zucchini, aromatic onions, and a rich, creamy filling encapsulates the essence of comfort food. Embrace the flavors of this uncomplicated yet utterly delicious pie at any time of the year, and indulge in a slice of culinary delight that promises to please.