Zucchini is one of those versatile vegetables that can turn any dish into a wholesome, hearty, and low-carb meal. And what better way to enjoy it than in a Shredded Zucchini Casserole? This dish is a cheesy, golden-baked comfort food that’s perfect for lunch, dinner, or even as a side.
Whether you’re trying to use up a garden harvest or simply looking for a healthier twist on your usual casseroles, this zucchini casserole checks every box. It’s packed with flavor from three types of cheese, aromatic garlic and onion, and the savory crunch of Italian-seasoned panko.
With just a few pantry staples and fresh zucchini, you can whip up a crowd-pleaser that’s both indulgent and nutritious. Great for vegetarians, and easy to make gluten-free if needed!
Ingredients
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8 cups coarsely shredded zucchini (about 4–5 medium zucchini)
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1/2 teaspoon salt
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1 tablespoon olive oil
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1 cup finely chopped onion
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4 cloves garlic, minced
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4 large eggs
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1/2 teaspoon freshly ground black pepper
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1 1/2 cups shredded mozzarella cheese
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1 1/2 cups shredded sharp Cheddar cheese
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3/4 cup grated Parmesan cheese, divided
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2/3 cup Italian seasoned panko breadcrumbs
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3 tablespoons butter, melted
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Chopped chives, to taste, for garnish
Preparation
1: Prepare the Zucchini
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Shred the zucchini using a box grater or food processor.
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Place it in a colander, sprinkle with 1/2 tsp salt, and let sit for 20 minutes to draw out excess moisture.
-
After resting, use a clean kitchen towel or cheesecloth to squeeze out as much water as possible.
2: Sauté the Aromatics
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Heat olive oil in a skillet over medium heat.
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Add chopped onion and sauté for 4–5 minutes until soft and translucent.
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Add minced garlic and cook for another 1–2 minutes until fragrant.
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Remove from heat and let cool slightly.
3: Mix the Casserole Base
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In a large bowl, whisk together the eggs, black pepper, and cooled onion-garlic mixture.
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Add the squeezed zucchini, mozzarella, cheddar, 1/2 cup of Parmesan, and panko breadcrumbs.
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Mix until everything is evenly combined.
4: Bake the Casserole
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Preheat your oven to 375°F (190°C).
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Lightly grease a 9×13-inch baking dish with nonstick spray or butter.
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Pour the zucchini mixture into the dish and spread evenly.
-
Sprinkle the remaining 1/4 cup Parmesan on top.
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Drizzle the melted butter evenly over the top for a golden crust.
5: Bake and Garnish
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Bake uncovered for 35–40 minutes or until the top is golden brown and the center is set.
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Remove from the oven and let rest for 5–10 minutes before slicing.
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Garnish with chopped chives just before serving.
Variations
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Gluten-Free Version: Use gluten-free breadcrumbs or almond flour instead of panko.
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Add Protein: Add cooked ground turkey, sausage, or shredded chicken for a meaty twist.
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Low-Dairy Option: Substitute some of the cheese with dairy-free alternatives or reduce cheese quantities.
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Spicy Kick: Add a pinch of red pepper flakes or chopped jalapeños for heat.
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Herbed Flavor: Add fresh herbs like basil, parsley, or dill for a garden-fresh profile.
Cooking Notes
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Squeezing out the zucchini thoroughly is key to avoiding a soggy casserole.
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Feel free to prep the dish a few hours in advance and refrigerate until ready to bake.
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The casserole keeps well and reheats beautifully — perfect for leftovers!
Serving Suggestions
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Serve with a crisp green salad for a balanced meal.
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Pair it with roasted chicken, grilled fish, or veggie soup.
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Excellent as a brunch dish alongside toast or fruit salad.
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Can also be sliced into squares and packed in lunchboxes.
Tips
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Grate coarse: Coarsely shredded zucchini provides better texture than finely grated.
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Rest before slicing: Let the casserole sit after baking to help it firm up.
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Customize cheeses: Use Gruyère, Swiss, or Monterey Jack to change flavor profiles.
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Double batch: Make a second batch and freeze for a quick meal later!
Prep & Cook Time
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Prep Time: 30 minutes
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Cooking Time: 40 minutes
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Total Time: 1 hour 10 minutes
Nutritional Information (Per Serving – Based on 8 Servings)**
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Calories: ~285
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Protein: 14g
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Carbohydrates: 12g
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Fat: 20g
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Sodium: 460mg
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Fiber: 2g
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Sugar: 3g
(Note: Values may vary based on specific brands and portion sizes)
FAQs
Can I freeze shredded zucchini casserole?
Yes! Let it cool completely, slice into portions, wrap well, and freeze. Reheat in the oven at 350°F until warm throughout.
How do I keep the casserole from being watery?
Salt and squeeze the zucchini thoroughly before mixing. You can even repeat the squeezing step twice if needed.
Can I make this casserole ahead of time?
Absolutely! Assemble it up to 12 hours in advance and store covered in the fridge. Bake when ready.
What other cheeses work well in this recipe?
Try provolone, Gruyère, Monterey Jack, or a smoked cheddar for a different flavor.
How long will leftovers last?
Stored in the fridge in an airtight container, leftovers will last for up to 4 days.
Conclusion
The Shredded Zucchini Casserole is more than just a way to use up extra zucchini—it’s a comforting, satisfying, and delicious dish that brings together cheesy goodness and garden-fresh flavor in every bite. Ideal for families, potlucks, meal prep, or a simple weeknight dinner, this casserole is guaranteed to impress.
Best of all, it’s endlessly adaptable. With just a few tweaks, it can be vegetarian, gluten-free, protein-packed, or low-carb. This recipe is a staple that you’ll find yourself coming back to, especially during zucchini season.
Give it a try today, and bring some cheesy zucchini joy to your table!
Print
Easy Shredded Zucchini Casserole Recipe – Cheesy & Delicious
- Total Time: 1 hour 10 minutes
Description
Zucchini is one of those versatile vegetables that can turn any dish into a wholesome, hearty, and low-carb meal. And what better way to enjoy it than in a Shredded Zucchini Casserole? This dish is a cheesy, golden-baked comfort food that’s perfect for lunch, dinner, or even as a side.
Ingredients
-
8 cups coarsely shredded zucchini (about 4–5 medium zucchini)
-
1/2 teaspoon salt
-
1 tablespoon olive oil
-
1 cup finely chopped onion
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4 cloves garlic, minced
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4 large eggs
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1/2 teaspoon freshly ground black pepper
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1 1/2 cups shredded mozzarella cheese
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1 1/2 cups shredded sharp Cheddar cheese
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3/4 cup grated Parmesan cheese, divided
-
2/3 cup Italian seasoned panko breadcrumbs
-
3 tablespoons butter, melted
-
Chopped chives, to taste, for garnish
Instructions
Step 1: Prepare the Zucchini
-
Shred the zucchini using a box grater or food processor.
-
Place it in a colander, sprinkle with 1/2 tsp salt, and let sit for 20 minutes to draw out excess moisture.
-
After resting, use a clean kitchen towel or cheesecloth to squeeze out as much water as possible.
Step 2: Sauté the Aromatics
-
Heat olive oil in a skillet over medium heat.
-
Add chopped onion and sauté for 4–5 minutes until soft and translucent.
-
Add minced garlic and cook for another 1–2 minutes until fragrant.
-
Remove from heat and let cool slightly.
Step 3: Mix the Casserole Base
-
In a large bowl, whisk together the eggs, black pepper, and cooled onion-garlic mixture.
-
Add the squeezed zucchini, mozzarella, cheddar, 1/2 cup of Parmesan, and panko breadcrumbs.
-
Mix until everything is evenly combined.
Step 4: Bake the Casserole
-
Preheat your oven to 375°F (190°C).
-
Lightly grease a 9×13-inch baking dish with nonstick spray or butter.
-
Pour the zucchini mixture into the dish and spread evenly.
-
Sprinkle the remaining 1/4 cup Parmesan on top.
-
Drizzle the melted butter evenly over the top for a golden crust.
Step 5: Bake and Garnish
-
Bake uncovered for 35–40 minutes or until the top is golden brown and the center is set.
-
Remove from the oven and let rest for 5–10 minutes before slicing.
-
Garnish with chopped chives just before serving.
Notes
-
Squeezing out the zucchini thoroughly is key to avoiding a soggy casserole.
-
Feel free to prep the dish a few hours in advance and refrigerate until ready to bake.
-
The casserole keeps well and reheats beautifully — perfect for leftovers!
- Prep Time: 30 minutes
- Cook Time: 40 minutes