If you’re looking for a healthy, flavorful, and comforting dish packed with fresh veggies, this Garden Zucchini Casserole is the perfect choice. It’s a vibrant mix of zucchini, onions, peppers, spinach, and melty mozzarella cheese—easy to prepare and ideal for a weeknight dinner or a potluck gathering.
🧑🍳 Why You’ll Love This Zucchini Casserole
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Low-carb and packed with fiber
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A great way to use fresh garden veggies
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Kid-friendly and full of flavor
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Ready in under 40 minutes
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Perfect side dish or light main course
🥒 Ingredients You’ll Need:
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2 medium zucchinis, sliced (about 4 cups)
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1 medium onion, chopped
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1 red bell pepper, chopped
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2 cups fresh spinach, chopped
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1 cup shredded mozzarella cheese
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½ cup grated Parmesan cheese
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3 large eggs
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½ cup milk
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1 tsp garlic powder
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½ tsp dried thyme
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Salt & black pepper, to taste
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1 tbsp olive oil or butter (for greasing the baking dish)
👩🍳 Instructions:
Step 1: Prepare the Vegetables
Wash and slice the zucchinis. Chop the onion, bell pepper, and fresh spinach. Lightly sauté them (optional) in a pan with olive oil for 3–4 minutes until slightly tender.
Step 2: Mix the Filling
In a large bowl, whisk together the eggs, milk, garlic powder, thyme, salt, and pepper. Stir in the shredded mozzarella and sautéed vegetables. Mix well.
Step 3: Assemble the Casserole
Preheat your oven to 375°F (190°C) or air fryer to 350°F. Lightly grease a baking dish or an air fryer-safe pan with olive oil or butter. Pour in the veggie mixture and smooth the top. Sprinkle grated Parmesan over the top for an extra cheesy crust.
Step 4: Bake
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Oven method: Bake uncovered for 30–35 minutes until golden and set.
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Air fryer method: Cook for 20–25 minutes, checking halfway through.
Let it cool for 5 minutes before slicing and serving.
💡 Tips for the Best Zucchini Casserole
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Use a paper towel to pat zucchini slices dry to reduce excess moisture.
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Add cooked chicken or turkey to make it a complete meal.
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Swap mozzarella with cheddar for a sharper flavor.
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Make it keto by skipping the milk or using heavy cream.
🍽️ Serving Suggestions
Serve this casserole with grilled chicken, garlic bread, or a simple green salad. It also makes an amazing leftover—store in an airtight container for up to 3 days.
📌 Final Thoughts
This Garden Zucchini Casserole is a flavorful and nutritious way to enjoy your garden’s bounty. It’s easy, wholesome, and super cheesy—what more could you ask for?
✅ Tried this recipe? Let us know in the comments or tag us on Pinterest!