Garlic Parmesan Zucchini Casserole

by 247tasty

Prep Time: 15 mins | Cook Time: 25 mins | Total Time: 40 mins | Servings: 6-8

This simple side dish pairs well with just about anything. Delicious and super easy to throw together using a few simple ingredients. Complete your meal and enjoy a filling dinner with this garlic Parmesan zucchini casserole.


2 eggs
2 tbsp melted butter
4 c. grated zucchini I used about 3.5 medium zucchini
1 tbsp minced garlic
½ c. grated Parmesan cheese, plus an additional 2 tbsp
½ c. shredded cheddar cheese
1 c. shredded mozzarella cheese
½ c. Panko breadcrumbs
½ c. finely diced onion I like to use frozen diced onion as a shortcut
½ tsp salt

How to make Garlic Parmesan Zucchini Casserole

Step 1: Prepare the oven. Preheat it to 375 degrees F. Using cooking spray, grease a small baking dish, and set aside.

Step 2: In a colander, place the zucchini and sprinkle with salt. Let the zucchini sit for approximately 10 minutes. Squeeze the moisture out after 10 minutes. You can wrap the zucchini in a dish towel, squeeze it, and wring it out a few times to make sure you get most of the water out of the zucchini.

Step 3: Place the zucchini, onion, garlic, eggs, ½ cup Parmesan cheese, mozzarella cheese, and cheddar cheese into the prepared dish. Mix well using your hands, pressing the mixture gently and evenly. Place in the preheated oven and bake for about 20 minutes, uncovered.

Step 4: In the meantime, mix the melted butter, bread crumbs, and 2 tbsp Parmesan cheese in a small bowl until well combined.

Step 5: Take the zucchini out of the oven after 20 minutes and sprinkle over the buttered bread crumbs. Place the dish back in the oven and bake for another 5 to 10 minutes or until the top is crispy and golden brown.


1. To shred the zucchini, you can use a handheld box grater or food processor.

2. Do not skip the step where you drain the zucchini to avoid the casserole from getting mushy.

3. For a bright burst of color and flavor, garnish the casserole with fresh herbs like chopped fresh parsley.

Nutrition Facts:

Serving: 1/6 of the casserole | Calories: 225 kcal | Carbohydrates: 8g | Protein: 13g | Fat: 15g | Saturated Fat: 8g | Cholesterol: 96mg | Sodium: 594mg | Potassium: 299mg | Fiber: 1g | Sugar: 3g | Vitamin A: 655IU | Vitamin C: 16.2mg | Calcium: 291mg | Iron: 1mg

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