Zucchini Casserole Bake

Discover the ultimate comfort food with this Zucchini Casserole Bake—a hearty, cheesy dish that’s perfect for weeknight dinners or potluck gatherings. Packed with tender slices of zucchini, savory sautéed onions, and a creamy egg-cheese mixture, this recipe delivers layers of flavor in every bite. Topped with golden, buttery breadcrumbs for added crunch, this casserole is baked to perfection in just 30 minutes. What’s more, it’s quick to prepare with just 20 minutes of prep time and makes an ideal way to use up fresh zucchini. Serve it as a standalone meal or a flavorful side dish, and don’t forget the optional parsley garnish for a burst of color and freshness. This zucchini-based, cheesy casserole is sure to become a family favorite!

Nutriscore Rating: 54/100

Prep Time:20 mins

Cook Time:30 mins

Total Time:50 mins

Servings: 6

Ingredients

• 4 cups (sliced) zucchini
• 2 tablespoons olive oil
• 1 large (diced) onion
• 2 cloves (minced) garlic
• 2 large eggs
• 1 cup shredded cheddar cheese
• 0.5 cup grated Parmesan cheese
• 0.5 cup milk
• 1 cup breadcrumbs
• 2 tablespoons (melted) butter
• 1 teaspoon salt
• 0.5 teaspoon black pepper
• 2 tablespoons (chopped, optional for garnish) fresh parsley

Directions

Step 1

Preheat your oven to 375°F (190°C). Lightly grease a 9x9-inch baking dish or similar casserole dish.

Step 2

Slice the zucchini into thin rounds, about 1/4-inch thick, and set aside.

Step 3

Heat a large skillet over medium heat and add the olive oil. Sauté the diced onion for 3-4 minutes until softened. Add the minced garlic and cook for an additional 1 minute until fragrant. Remove from heat.

Step 4

In a large mixing bowl, whisk together the eggs, milk, salt, and black pepper. Stir in the shredded cheddar cheese and Parmesan cheese.

Step 5

Add the sautéed onions and garlic to the egg mixture, then gently fold in the sliced zucchini until everything is evenly coated.

Step 6

Pour the mixture into the prepared baking dish and spread it out evenly.

Step 7

In a small bowl, mix the breadcrumbs with the melted butter. Sprinkle the breadcrumb mixture evenly over the top of the casserole.

Step 8

Bake in the preheated oven for 25-30 minutes, or until the top is golden brown and the casserole is set. You should see bubbles around the edges when it’s ready.

Step 9

Remove the casserole from the oven and let it cool for 5 minutes. Optionally, garnish with fresh parsley before serving.

Step 10

Serve warm and enjoy your Zucchini Casserole Bake!

Nutrition Facts

Serving size	(1437.0g)

Amount per serving	% Daily Value*
Calories	2025.4

Total Fat 119.5g	0%
Saturated Fat 55.6g	0%
Polyunsaturated Fat 4.0g
Cholesterol 609.9mg	0%
Sodium 12273.9mg	0%
Total Carbohydrate 167.1g	0%
Dietary Fiber 12.7g	0%
Total Sugars 70.8g
Protein 86.4g	0%

Vitamin D 140.2IU	0%
Calcium 1687.0mg	0%
Iron 10.2mg	0%
Potassium 2244.3mg	0%

*The % Daily Value tells you how much a nutrient in a serving of food contributes to a daily diet. 2,000 calories a day is used for general nutrition advice.

Source of Calories

Fat: 51.5%

Protein: 16.5%

Carbs: 32.0%