Easy Air Fryer Zucchini Casserole made with fresh zucchini, Parmesan, and simple seasonings — a cheesy, crispy side dish ready in about 30 minutes. Includes an oven method too.
Ingredients
3cupszucchini, chopped (about 3 small)
½cuponion, diced
4large eggs
1cupBisquick or baking mix
½cupParmesan cheese, freshly grated
½cupvegetable oil
2teaspoonsdried parsley
1teaspoondried oregano
1teaspoonsalt
½teaspoonblack pepper
Instructions
Chop the zucchini into small, even pieces until you have 3 cups. Finely dice the onion.
In a large bowl, stir the salt, pepper, parsley, and oregano into the zucchini and onion.
Whisk in the eggs, then add the vegetable oil and baking mix. Mix until combined.
Fold in the Parmesan cheese and stir until everything is evenly combined.
Spoon the mixture into a greased, air-fryer-safe pan.
Set the air fryer to 320°F and cook for 15 minutes.
Check the casserole — it should be set in the center and golden on top. Add a few more minutes if needed.
Remove and let cool slightly before slicing and serving.
Oven Method: Preheat the oven to 350°F. Spoon the mixture into a greased 8x8 baking dish and bake 30–35 minutes, until golden and a knife inserted in the center comes out clean.
For especially watery zucchini, pat the chopped pieces dry before mixing.
Freshly grated Parmesan browns better than pre-shredded.
Stir in cooked ground beef or sausage to turn it into a main course.