Easy Cheesy Zucchini Casserole Recipe

This Cheesy Zucchini Casserole is the perfect way to enjoy garden-fresh zucchini in a rich, comforting, and cheesy bake. It’s creamy, savory, and golden on top — a dish that works well as both a side and a light main course.

What Is a Cheesy Zucchini Casserole?

A cheesy zucchini casserole is a baked dish made with sliced or grated zucchini, cheese, eggs, and a few simple seasonings. It’s creamy in the center with a slightly crisp, golden crust on top. This casserole combines the mild sweetness of zucchini with the richness of melted cheese, creating a balanced and satisfying dish that pairs perfectly with meats, salads, or even pasta.

Other Popular Casserole Recipes

• Mediterranean Chicken Zucchini Bake
• Ground Beef Zucchini Casserole
• Chicken Zucchini Casserole

Reasons to Try Cheesy Zucchini Casserole

• Simple and quick – Uses everyday ingredients and takes minimal prep time.
• Perfect for summer – Great for using up fresh zucchini from the garden.
• Cheesy and satisfying – Combines the best of comfort and nutrition.
• Customizable – Add herbs, spices, or other vegetables easily.
• Family favorite – Loved by both kids and adults alike.

Ingredients Needed to Make Cheesy Zucchini Casserole

• 4 medium zucchinis (about 5–6 cups), sliced or shredded
• 1 small onion, finely chopped
• 2 cups shredded cheddar cheese (divided)
• ½ cup grated Parmesan cheese
• 2 large eggs
• ½ cup sour cream or Greek yogurt
• ½ cup breadcrumbs or crushed crackers (for topping)
• 2 tablespoons melted butter
• ½ teaspoon salt
• ¼ teaspoon black pepper
• ½ teaspoon garlic powder
• ½ teaspoon dried oregano or Italian seasoning

Instructions to Prepare Cheesy Zucchini Casserole

Step 1: Preheat the oven

Preheat your oven to 375°F (190°C). Grease a 9×9-inch baking dish with butter or non-stick spray.

Step 2: Prepare the zucchini

If using sliced zucchini, place them in a colander, sprinkle lightly with salt, and let sit for 10–15 minutes to draw out excess moisture. Pat dry with paper towels before using.

Step 3: Make the creamy base

In a large bowl, whisk together eggs, sour cream, garlic powder, oregano, salt, and pepper until smooth. Add 1 ½ cups of cheddar cheese, Parmesan, and chopped onion. Stir to combine.

Step 4: Add the zucchini

Fold the zucchini into the mixture until evenly coated. Pour into the prepared baking dish and spread evenly.

Step 5: Add the topping

In a small bowl, mix breadcrumbs (or crushed crackers) with melted butter and the remaining ½ cup of cheddar cheese. Sprinkle evenly over the top.

Step 6: Bake until golden

Bake uncovered for 30–35 minutes, or until the casserole is bubbling and the top is golden brown.

Step 7: Cool and serve

Let the casserole rest for 5–10 minutes before slicing. Serve warm as a side or light main dish.

What Goes Well With Cheesy Zucchini Casserole

• Grilled chicken or steak – Balances the creamy texture with savory protein.
• Fresh green salad – Adds crispness and freshness.
• Garlic bread – Perfect for soaking up the cheesy sauce.
• Tomato soup – A comforting pairing for lunch or dinner.
• Roasted potatoes – For a heartier meal option.

Key Tips for Making Cheesy Zucchini Casserole

• Remove excess water – Prevents a soggy texture.
• Use fresh zucchini – Smaller zucchinis have better flavor and texture.
• Mix cheeses – Try a blend of mozzarella and cheddar for gooey results.
• Add crunch – Breadcrumbs or crushed Ritz crackers add texture.
• Let it cool slightly – Makes slicing easier and enhances flavor.
• Experiment with herbs – Basil, thyme, or dill add brightness.

Creative Variations of Cheesy Zucchini Casserole

• Keto-friendly version – Skip the breadcrumbs and use almond flour topping.
• Vegetable mix – Add corn, bell peppers, or mushrooms for color and flavor.
• Spicy twist – Sprinkle red pepper flakes or add diced jalapeños.
• Bacon lovers’ version – Mix in cooked, crumbled bacon for extra depth.
• Low-fat option – Use Greek yogurt and reduced-fat cheese.

Storage Guidelines for Cheesy Zucchini Casserole

• Refrigerate leftovers – Store in an airtight container for up to 4 days.
• Freeze portions – Wrap tightly and freeze for up to 2 months.
• Cool before storing – Prevents condensation and sogginess.
• Label and date – Keeps storage organized.

Reheating Tips for Cheesy Zucchini Casserole

• Oven method – Reheat covered at 325°F (160°C) for 15–20 minutes.
• Microwave method – Heat individual servings for 1–2 minutes until warm.
• From frozen – Thaw overnight in the fridge, then reheat in the oven until hot.

Nutritional Value (per serving):

• Calories: ~240
• Protein: 12 g
• Carbohydrates: 10 g
• Fat: 17 g
• Fiber: 2 g
• Sodium: 420 mg

FAQs

How do you keep zucchini casserole from getting watery?

Zucchini holds a lot of water, so it’s important to draw out the moisture before baking. Slice or grate the zucchini, sprinkle it lightly with salt, and let it sit for about 10–15 minutes. Then, pat it dry with paper towels before mixing it into the casserole. This step ensures a firm, creamy texture instead of a watery one.

Can I make cheesy zucchini casserole ahead of time?

Yes, you can assemble the casserole up to a day in advance. Cover it tightly and refrigerate until ready to bake. When you’re ready, bake it straight from the fridge, adding 5–10 minutes to the cooking time since it will start cold.

What type of cheese works best in zucchini casserole?

Cheddar is the classic choice for its sharp flavor, but combining it with mozzarella or Parmesan gives a richer, creamier taste. If you want a milder flavor, Monterey Jack or Swiss also work beautifully.

Can I freeze cheesy zucchini casserole?

Yes, this casserole freezes well. Cool it completely, wrap it tightly in foil or plastic wrap, and freeze for up to 2 months. Reheat it in the oven at 350°F (175°C) until warmed through.

Final Words

This Cheesy Zucchini Casserole is a delicious way to bring comfort and freshness together in one dish. With its creamy base, cheesy topping, and mild zucchini flavor, it’s a side that fits any occasion — from family dinners to holiday spreads. Simple, hearty, and full of flavor, this casserole will quickly become one of your go-to favorites.

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