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Zucchini Casserole with Eggs and Cheese
This is an easy zucchini casserole made with zucchini, eggs, mozzarella, and simple seasonings. Perfect for breakfast, brunch, or dinner.

Ingredients
Instructions
Preheat
- Step 1
Preheat oven to 400°F.
Cook zucchini and onion
- Step 2
In a large frying pan, heat olive oil over medium heat. Cook the zucchini and onion until the zucchini is tender and the onions are translucent. Drain in a colander and allow veggies to cool for 5–10 minutes.
Combine ingredients
- Step 3
Meanwhile, whisk the eggs, mustard, shredded mozzarella, and seasonings until combined in a large mixing bowl. When the zucchini has cooled slightly, stir in the zucchini/onion mixture.
Pour ingredients into the baking dish
- Step 4
Grease a 9x13 casserole dish. Pour in zucchini/egg mixture. Smooth over the zucchini so it lays flat.
Bake
- Step 5
Bake for 30–35 minutes or until eggs start to brown. Cover with foil and bake for an additional 10 minutes or until a knife is inserted into the center and comes out clean.
Serve
- Step 6
Let the casserole stand for 10 minutes before serving.
Tips & Tricks
Per serving

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