Garlic Parmesan Zucchini Casserole: A Flavorful and Cheesy Delight

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There’s something special about a warm, cheesy, and crispy Garlic Parmesan Zucchini Casserole. If you’re looking for a delicious, comforting, and easy-to-make dish, this recipe is a must-try! Packed with grated zucchini, a blend of rich cheeses, and crispy Panko breadcrumbs, this casserole offers a perfect balance of flavor and texture.

Whether you need a weeknight dinner, a potluck favorite, or a tasty way to use up extra zucchini, this cheesy zucchini bake is the answer. It’s a healthy, low-carb alternative to traditional casseroles while still being irresistibly cheesy and satisfying.

Why You’ll Love This Recipe

Cheesy & Flavorful – A rich combination of mozzarella, cheddar, and Parmesan.
Healthy & Nutritious – Made with fresh zucchini and simple ingredients.
Crispy & Golden Topping – Buttery Panko breadcrumbs and Parmesan for the perfect crunch.
Easy to Make – Just grate, mix, bake, and enjoy!
Great for Meal PrepStores well and reheats beautifully.

Ingredients for Garlic Parmesan Zucchini Casserole

Gather these fresh, wholesome ingredients before you begin:

Main Ingredients

IngredientQuantity
Grated zucchini (about 3.5 medium zucchinis)4 cups
Salt½ tsp
Finely chopped onion½ cup
Minced garlic (about 3 cloves)1 tbsp
Large eggs2
Grated Parmesan cheese½ cup (+ 2 tbsp for topping)
Shredded mozzarella cheese1 cup
Shredded cheddar cheese½ cup
Panko breadcrumbs½ cup
Melted salted butter2 tbsp

Step-by-Step Instructions for a Perfect Zucchini Casserole

1. Prepare the Zucchini

  • Grate the zucchini using a box grater.
  • Place the grated zucchini in a colander and sprinkle with salt.
  • Let it sit for 15 minutes to draw out excess moisture.
  • Press the zucchini with a paper towel or clean cloth to remove remaining water.

2. Mix the Ingredients

  • In a large mixing bowl, combine:
    • Grated zucchini
    • Chopped onion
    • Minced garlic
    • Eggs
  • Stir well to evenly distribute all ingredients.

3. Add the Cheeses

  • Stir in the Parmesan, mozzarella, and cheddar cheeses until well combined.

4. Assemble the Casserole

  • Lightly grease a baking dish with olive oil or cooking spray.
  • Spread the zucchini mixture evenly in the dish.

5. Make the Crispy Topping

  • In a small bowl, combine:
    • Panko breadcrumbs
    • Melted butter
    • 2 tbsp Parmesan cheese
  • Stir until the breadcrumbs are fully coated.

6. Bake the Casserole

  • Sprinkle the breadcrumb mixture evenly over the zucchini mixture.
  • Preheat oven to 375°F (190°C).
  • Bake for 25-30 minutes until the top is golden brown and crispy.

7. Serve & Enjoy

  • Let the casserole cool for a few minutes before slicing.
  • Serve warm as a side dish, light dinner, or appetizer.

Best Ways to Serve Garlic Parmesan Zucchini Casserole

✔ As a Side Dish

Pairs well with grilled chicken, steak, or roasted vegetables.

✔ As a Light Meal

Enjoy a slice with a fresh salad for a nutritious, low-carb dinner.

✔ With Pasta or Soup

Serve alongside pasta, tomato soup, or garlic bread for a hearty meal.

✔ Party Appetizer

Cut into small squares and serve at gatherings or potlucks.

How to Store & Reheat Leftovers

Storing:

  • Store in an airtight container in the fridge for up to 4 days.

Reheating:

  • Oven: Reheat at 350°F (175°C) for 10 minutes to restore crispiness.
  • Microwave: Heat on medium power for 1-2 minutes, though it may be softer.

Freezing Option:

  • Freeze individual portions in airtight containers for up to 2 months.
  • Thaw overnight in the fridge before reheating.

Nutritional Information (Per Serving)

NutrientAmount
Calories~210
Protein12g
Carbohydrates10g
Fat14g
Fiber2g
Calcium180mg

Note: Nutritional values are approximate and may vary based on ingredient brands.

Frequently Asked Questions (FAQ)

1. Can I make this casserole gluten-free?

Yes! Just replace Panko breadcrumbs with gluten-free breadcrumbs or crushed almond flour.

2. What’s the best way to remove excess moisture from zucchini?

After salting the grated zucchini, let it sit for 15 minutes, then squeeze out extra water using a paper towel or clean cloth.

3. Can I use different cheeses?

Absolutely! Try Gruyère, Swiss, or Gouda for a unique flavor.

4. How do I make the casserole extra crispy?

For extra crunch, broil the casserole for the last 3-4 minutes of baking.

5. Can I add other vegetables?

Yes! Spinach, mushrooms, bell peppers, or chopped broccoli make great additions.

6. Can I prepare this casserole ahead of time?

Yes! Assemble everything in the dish, cover, and refrigerate for up to 24 hours before baking.

Final Thoughts: A Must-Try Cheesy Comfort Food

This Garlic Parmesan Zucchini Casserole is the perfect cheesy, crispy, and flavorful dish that brings together fresh zucchini, melted cheese, and golden breadcrumbs. Whether you’re looking for a quick dinner, a delicious side, or a meal-prep option, this easy-to-make casserole is a guaranteed crowd-pleaser.

Try this irresistible zucchini bake today, and enjoy a warm, cheesy, and nutritious homemade meal!

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Garlic Parmesan Zucchini Casserole: A Flavorful and Cheesy Delight


  • Author: Raven
  • Total Time: 50 minutes
  • Yield: 6 servings 1x

Description

This Garlic Parmesan Zucchini Casserole is a rich, cheesy, and comforting dish perfect for any occasion. Made with fresh zucchini, a blend of three cheeses, and a crispy Panko topping, this casserole is packed with flavor and texture. It’s easy to prepare, naturally low-carb, and a great way to use up extra zucchini. Serve it as a side dish, a light dinner, or even an appetizer for guests!


Ingredients

Scale
  • 4 cups grated zucchini (about 3.5 medium zucchinis)
  • ½ teaspoon salt
  • ½ cup finely chopped onion
  • 1 tablespoon minced garlic (about 3 cloves)
  • 2 large eggs
  • ½ cup grated Parmesan cheese (plus 2 tablespoons for topping)
  • 1 cup shredded mozzarella cheese
  • ½ cup shredded cheddar cheese
  • ½ cup Panko breadcrumbs
  • 2 tablespoons melted salted butter

Instructions

1. Prepare the Zucchini

  • Grate the zucchini and place it in a colander.
  • Sprinkle ½ teaspoon of salt over the zucchini and let it sit for 15 minutes to draw out excess moisture.
  • After 15 minutes, press the zucchini with a paper towel or clean cloth to remove any remaining liquid.

2. Combine the Ingredients

  • In a large mixing bowl, combine:
    • Grated zucchini
    • Chopped onion
    • Minced garlic
    • Eggs
  • Stir thoroughly to mix everything evenly.

3. Add the Cheeses

  • Mix in the Parmesan, mozzarella, and cheddar cheeses, stirring until well combined.

4. Assemble the Casserole

  • Lightly grease a baking dish with olive oil or cooking spray.
  • Spread the zucchini mixture evenly in the dish, pressing it down with a spatula.

5. Prepare the Topping

  • In a small bowl, mix together:
    • Panko breadcrumbs
    • Melted butter
    • 2 tablespoons Parmesan cheese
  • Stir until the breadcrumbs are evenly coated.

6. Bake the Casserole

  • Sprinkle the breadcrumb mixture evenly over the zucchini layer.
  • Preheat oven to 375°F (190°C).
  • Bake for 25-30 minutes or until the top is golden brown and crispy.

7. Serve & Enjoy

  • Let the casserole cool for a few minutes before slicing.
  • Serve warm as a side dish, appetizer, or light meal.

Notes

  • For a gluten-free version, replace Panko breadcrumbs with gluten-free breadcrumbs or almond flour.
  • To make it extra crispy, broil for the last 3-4 minutes of baking.
  • Add chopped spinach, mushrooms, or bell peppers for extra flavor.
  • Store leftovers in an airtight container in the fridge for up to 4 days.
  • Reheat in the oven at 350°F (175°C) for 10 minutes to restore crispiness.
  • Prep Time: 20 minutes
  • Cook Time: 30 minutes
  • Category: Side Dish
  • Method: Baking
  • Cuisine: American