When summer’s bounty of zucchini starts taking over the garden, I find myself searching for inventive ways to feature this versatile vegetable. Enter my Cheesy Zucchini Casserole—a dish that combines the rich creaminess of cheese with the light, tender texture of fresh zucchini. The first time I served it at a family gathering, I couldn’t believe the delighted faces around the table. Not only does it boast a golden, bubbly crust that beckons from the oven, but it’s also incredibly easy to whip up!
This recipe is my go-to for those warm, busy evenings when I want something hearty yet healthful. The best part? You can customize it to meet different dietary needs—think gluten-free breadcrumbs or dairy-free cheese options. Whether you’re looking to impress guests or simply elevate your weeknight dinners, this casserole is undeniably a crowd-pleaser. Let’s dive in and transform your fresh zucchini into a comforting dish that brings smiles to every plate!
Why is Cheesy Zucchini Casserole a Must-Try?
Deliciously Unique: This casserole marries the richness of cheese with the freshness of zucchini, creating a dish that’s both satisfying and nutritious.
Customizable: With options for gluten-free breadcrumbs and dairy-free cheese, it caters to various dietary preferences, making it versatile for any gathering.
Simple Preparation: Just a few steps stand between you and a scrumptious meal, perfect for busy weeknights or summer potlucks.
Family Favorite: Its golden, bubbly top is always a hit, delighting kids and adults alike, ensuring there are no leftovers!
Great Make-Ahead Option: Prepping in advance means you can enjoy stress-free meals—just reheat and serve.
This Cheesy Zucchini Casserole will quickly become a staple in your home, combining ease, flavor, and comfort for all to enjoy!
Cheesy Zucchini Casserole Ingredients
For the Casserole
• Cooking Spray – Prevents sticking; consider using oil for a richer flavor.
• Zucchini (6 to 8 medium) – The main ingredient, adds moisture and nutrients; yellow squash works as a flavorful substitute.
• Small Yellow Onion (1, finely chopped or grated, about 1 cup) – Adds sweetness and depth; shallots or leeks can be used for a milder taste.
• Kosher Salt (2 1/2 teaspoons, divided) – Enhances flavor by drawing moisture from the vegetables; adjust according to taste.
• Panko Breadcrumbs (1 3/4 cups, divided) – Provides a crispy texture on top; use finely ground breadcrumbs for a finer crunch or omit for a gluten-free option.
• Parmesan Cheese (2 1/2 ounces, finely grated, about 2/3 cup) – Adds depth and umami flavor; nutritional yeast can be a great cheese alternative for a vegan version.
• Large Eggs (3) – Binds the casserole together; flaxseed meal mixed with water serves as a vegan substitute.
• Full-Fat Plain Greek Yogurt or Sour Cream (2/3 cup) – Contributes creaminess; plant-based yogurt works for a dairy-free option.
• Dijon Mustard (2 teaspoons) – Provides tang and depth; yellow mustard is a good alternative if preferred.
• Garlic Powder (1 teaspoon) – Boosts flavor; fresh garlic can be swapped in for a more robust taste.
• Dried Oregano (1/2 teaspoon) – Adds an aromatic note; fresh oregano can be used for a burst of flavor.
• Freshly Ground Black Pepper (1/4 teaspoon) – For seasoning; adjust to your tasting preference.
• Shredded Sharp Cheddar Cheese (4 ounces, about 1 1/4 cups) – This cheese brings on the cheesiness; use plant-based cheese for a dairy-free version.
• Melted Unsalted Butter or Olive Oil (2 tablespoons) – Enhances the crispiness of the topping; coconut oil offers a different flavor profile.
For Variations
• Mozzarella Cheese – Swap with sharp cheddar for a milder flavor.
• Jalapeños or Crushed Red Pepper Flakes – Add for a kick; perfect if you love a little heat!
• Other Vegetables (bell peppers, spinach) – Incorporate for extra nutrients and varied flavors; zucchini is just the beginning!
This Cheesy Zucchini Casserole proves that comforting meals can be both delicious and nourishing. Enjoy every bite!
How to Make Cheesy Zucchini Casserole
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Preheat the Oven: Start by preheating your oven to 375ºF (190ºC). This ensures that your casserole bakes evenly and comes out perfectly golden brown. Meanwhile, prepare a 9×13-inch baking dish by coating it with cooking spray.
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Drain the Zucchini: Grate the zucchini and combine it with the finely chopped onion in a colander. Sprinkle with 2 teaspoons of kosher salt and allow it to drain for 20 minutes. This step helps remove excess moisture that could make your casserole soggy.
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Squeeze Out Liquid: After 20 minutes, gently squeeze the zucchini mixture to remove additional moisture. The goal here is to have a dry mixture that will bake beautifully without excess water.
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Combine Ingredients: In a large mixing bowl, stir together 1 3/4 cups of panko breadcrumbs, 2 1/2 ounces of grated Parmesan, 3 large eggs, 2/3 cup of Greek yogurt or sour cream, 2 teaspoons of Dijon mustard, 1 teaspoon of garlic powder, and 1/2 teaspoon of dried oregano. Mix in the drained zucchini and onion until well combined; feel free to use your hands for an even mix!
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Prepare the Baking Dish: Spread the zucchini mixture evenly in your prepared baking dish, smoothing it out with a spatula. Now, sprinkle 4 ounces of shredded cheddar cheese over the top for that irresistible cheesy goodness.
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Add Topping: In the same bowl, mix the remaining 1 cup of panko breadcrumbs with 2 tablespoons of melted butter or olive oil. Sprinkle this topping evenly over the cheese layer. This will give the casserole a delightful crunch!
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Bake to Perfection: Place the baking dish in the preheated oven and bake for 35 to 45 minutes. Look for bubbly edges and a golden brown top as indicators it’s ready. Your casserole should be fragrant and inviting!
Optional: Garnish with fresh herbs before serving for an extra touch of flavor.
Exact quantities are listed in the recipe card below.
Expert Tips for Cheesy Zucchini Casserole
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Remove Excess Moisture: Make sure to thoroughly squeeze out the zucchini mixture after draining it. Excess water can lead to a soggy casserole, ruining its texture.
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Flavorful Onions: For a richer flavor, consider browning the onions in a little oil before mixing them into your casserole. This elevates the dish with caramelized depth.
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Breadcrumb Substitutes: If you’re looking for a gluten-free option, be sure to use gluten-free breadcrumbs. They provide the same satisfying crunch without compromising texture.
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Customize Cheeses: Feel free to mix up the cheeses! Combine mozzarella with sharp cheddar for a unique flavor twist, or use a plant-based cheese for a delightful dairy-free version.
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Add More Veggies: Expand the nutritional profile of your Cheesy Zucchini Casserole by adding other veggies such as bell peppers or spinach. It’s a great way to use up summer produce!
Make Ahead Options
These Cheesy Zucchini Casserole delights are perfect for meal prep enthusiasts! You can grate the zucchini and onion and let them drain in salt up to 24 hours in advance, ensuring optimal texture and moisture control. Additionally, mix the remaining components in a separate bowl and refrigerate everything for up to 3 days. When you’re ready to serve, simply combine the drained zucchini with the prepped mixture, spread it in your baking dish, and top with cheese and breadcrumbs before popping it in the oven. This approach means you’ll be just minutes away from a comforting, hearty meal with minimal effort on busy evenings!
What to Serve with Cheesy Zucchini Casserole?
This delightful zucchini casserole makes the perfect centerpiece for a summer meal, inviting flavors and textures to complement your gathering.
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Fresh Garden Salad: A crisp mix of greens with a tangy vinaigrette balances the rich creaminess of the casserole, providing a refreshing contrast. Add some cherry tomatoes or cucumbers for an extra crunch!
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Grilled Lemon Herb Chicken: Juicy and flavorful grilled chicken enhances the comfort of the casserole. The citrusy notes from lemon really bring the dish together, making every bite satisfying.
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Garlic Breadsticks: These soft and buttery breadsticks add a wonderful texture to your meal. Perfect for soaking up any cheesy goodness left on your plate!
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Roasted Asparagus: Tender and slightly charred, roasted asparagus drizzled with olive oil and a sprinkle of salt adds a perfectly earthy touch. It’s a delightful way to incorporate more veggies into your dinner.
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Creamy Coleslaw: A cool and crunchy coleslaw provides a delightful crunch that contrasts with the casserole’s warmth. It’s an excellent side for those who want that crunchy, fresh element.
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White Wine Spritzer: A light and fizzy white wine spritzer is the ideal drink to accompany your meal. Its crisp taste pairs beautifully with the flavors of the casserole and keeps the atmosphere refreshing.
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Chocolate Chip Cookies: Sweeten the end of your meal with classic chocolate chip cookies. Their warm, gooey texture will have everyone requesting seconds!
With these delightful pairings, your Cheesy Zucchini Casserole will be the highlight of any dining experience, creating cherished memories around the table.
Cheesy Zucchini Casserole Variations
Feel free to get creative and adapt this dish to your taste and dietary needs, adding new layers of flavor and texture!
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Mozzarella Cheese: Swap out sharp cheddar for mozzarella for a milder, creamier flavor that melts beautifully.
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Spicy Kick: Add jalapeños or crushed red pepper flakes for a delightful heat; spice lovers will appreciate the extra zing!
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Mixed Veggies: Incorporate other vegetables such as bell peppers or spinach for added nutrients and vibrant color throughout the casserole. It’s a wonderful way to clean out your fridge!
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Herb Infusion: Swap dried oregano for fresh herbs like thyme or basil; they’ll bring a fragrant freshness that’s simply irresistible.
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Vegan Twist: Replace eggs with flaxseed meal mixed with water for binding, and use plant-based cheese and yogurt for a completely vegan version.
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Zesty Flavor: Experiment with sriracha or any favorite hot sauce in the mixture for a bold flavor enhancement that packs a punch.
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Different Breadcrumbs: Use gluten-free breadcrumbs if needed, or skip them altogether for a low-carb version that’s still deliciously satisfying!
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Cheesy Topping: Mix in some parmesan or an extra layer of different cheese on top for the ultimate gooey finish that will have everyone coming back for seconds.
These variations make the Cheesy Zucchini Casserole a versatile dish that can reflect your personal tastes and dietary needs, ensuring every bite is a joy!
How to Store and Freeze Cheesy Zucchini Casserole
Fridge: Store leftovers in an airtight container for up to 4 days. Allow the casserole to cool completely before refrigerating to maintain texture.
Freezer: For longer storage, freeze the casserole for up to 3 months. Wrap it tightly in plastic wrap and then in foil to prevent freezer burn.
Thawing: To enjoy, thaw the frozen casserole in the fridge overnight and reheat in the oven until warmed through, typically 25-30 minutes at 350ºF.
Reheating: If reheating from the fridge, heat the casserole in the oven at 350ºF for about 15-20 minutes, or until heated throughout for the best texture and flavor.
Cheesy Zucchini Casserole Recipe FAQs
How do I select the best zucchini for my casserole?
Absolutely! When choosing zucchini, look for firm ones with smooth skin. Avoid any with dark spots or blemishes, as they can indicate overripeness. Smaller zucchini tend to be more tender and flavorful; I recommend selecting medium-sized ones, around 6 to 8 inches long, for the best texture in your Cheesy Zucchini Casserole.
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How long can I store leftover Cheesy Zucchini Casserole?
You can store leftovers in an airtight container in the refrigerator for up to 4 days. Be sure to let the casserole cool completely before sealing it. This helps maintain its lovely texture and flavor, making it an easy meal for busy nights!
Can I freeze Cheesy Zucchini Casserole? If so, how?
Very much so! To freeze your casserole, allow it to cool completely, then wrap it tightly in plastic wrap and aluminum foil. This will protect it from freezer burn and keep it fresh for up to 3 months. When you’re ready to enjoy it, just thaw it in the refrigerator overnight and reheat in the oven at 350ºF until warmed through.
What if my casserole becomes too watery? How can I prevent this?
Great question! To avoid a watery casserole, make sure to drain the grated zucchini and onion well. After letting them sit in the colander with salt for 20 minutes, squeeze out any excess moisture by hand. This step is crucial for achieving that perfectly baked texture. If you’re still experiencing excess water, consider reducing the amount of yogurt slightly or using fewer eggs.
Are there dietary considerations I should keep in mind for this recipe?
Yes! The Cheesy Zucchini Casserole can cater to various dietary preferences. For a gluten-free version, simply opt for gluten-free breadcrumbs. If you need a dairy-free alternative, use plant-based yogurt and cheese substitutes like nutritional yeast. Always check labels to ensure the ingredients meet specific dietary needs, especially regarding allergies.
Cheesy Zucchini Casserole: A Cozy Comfort Food Delight
Ingredients
Equipment
Method
- Preheat your oven to 375ºF (190ºC). Prepare a 9x13-inch baking dish by coating it with cooking spray.
- Grate the zucchini and combine it with the finely chopped onion in a colander. Sprinkle with 2 teaspoons of kosher salt and allow it to drain for 20 minutes.
- After 20 minutes, gently squeeze the zucchini mixture to remove additional moisture.
- In a large mixing bowl, stir together 1 3/4 cups of panko breadcrumbs, 2 1/2 ounces of grated Parmesan, 3 large eggs, 2/3 cup of Greek yogurt or sour cream, 2 teaspoons of Dijon mustard, 1 teaspoon of garlic powder, and 1/2 teaspoon of dried oregano. Mix in the drained zucchini and onion.
- Spread the zucchini mixture evenly in your prepared baking dish, smoothing it out with a spatula. Sprinkle 4 ounces of shredded cheddar cheese over the top.
- In the same bowl, mix the remaining 1 cup of panko breadcrumbs with 2 tablespoons of melted butter or olive oil. Sprinkle this topping evenly over the cheese layer.
- Place the baking dish in the preheated oven and bake for 35 to 45 minutes, until bubbly edges and a golden brown top appear.