Easy Cheesy Zucchini Casserole

Make the most of summer’s bounty with our Easy Cheesy Zucchini Casserole recipe. Bursting with flavor and crowned with a golden breadcrumb topping, this creamy delight is a delightful side dish that will elevate any meal. Whether you’re entertaining guests or enjoying a cozy family dinner, this zucchini casserole is sure to become a favorite in your recipe collection.


  • 4 cups of fresh zucchini, diced into 1-inch pieces
  • 1 cup of creamy mayonnaise
  • 1 cup of shredded cheddar cheese
  • 2 eggs, slightly beaten
  • 1 teaspoon of black pepper
  • ¾ to 1 teaspoon of garlic powder
  • ¼ cup of crunchy Panko breadcrumbs
  • 1 tablespoon of melted butter


  1. Preheat and Prepare: Preheat your oven to 350°F (175°C). Grease a 1 1/2 quart baking dish and set it aside for later use.
  2. Parboil the Zucchini: In a pot of boiling water, cook the diced zucchini for approximately 3 minutes. Drain the zucchini and allow it to cool slightly.
  3. Combine Ingredients: In a large mixing bowl, combine the parboiled zucchini with creamy mayonnaise, shredded cheddar cheese, beaten eggs, black pepper, and garlic powder. Stir until all ingredients are well incorporated.
  4. Layer and Spread: Pour the zucchini mixture into the prepared baking dish, spreading it out evenly with a spatula.
  5. Prepare the Topping: In a separate bowl, mix together the Panko breadcrumbs and melted butter until well combined.
  6. Top and Bake: Sprinkle the breadcrumb mixture evenly over the top of the zucchini mixture in the baking dish.
  7. Bake to Perfection: Place the casserole dish in the preheated oven, uncovered, and bake for approximately 35 minutes, or until the zucchini is fork-tender and the top is beautifully golden brown.
  8. Serve and Enjoy: Once baked to perfection, remove the casserole from the oven and allow it to cool slightly before serving. Serve warm as a delightful side dish alongside your favorite main courses.

Prep Time: 10 minutes
Cooking Time: 35 minutes
Total Time: 55 minutes
Servings: 8

Serving and Storage Tips:

Serving Suggestions:

  • Serve the Easy Cheesy Zucchini Casserole as a delectable side dish alongside grilled chicken, steak, or fish for a complete and satisfying meal.
  • Pair it with a crisp green salad dressed with vinaigrette for a refreshing contrast of flavors and textures.
  • Enjoy leftovers for breakfast by reheating a portion and serving it with a fried or poached egg on top for a hearty and nutritious start to the day.

Storage Tips:

  • Store any leftover casserole in an airtight container in the refrigerator for up to 3-4 days.
  • Reheat individual servings in the microwave or oven until heated through for a quick and convenient meal option.
  • You can also freeze the casserole in portions for up to 2-3 months. Thaw overnight in the refrigerator before reheating.


1. Mediterranean Twist: Add diced tomatoes, black olives, and crumbled feta cheese to the zucchini mixture for a Mediterranean-inspired flavor profile.

2. Herbaceous Delight: Mix in chopped fresh herbs such as basil, parsley, or dill for a burst of freshness and aroma.

3. Veggie Medley: Incorporate other vegetables such as bell peppers, onions, or mushrooms to enhance the nutritional value and add depth to the dish.

4. Italian Influence: Replace cheddar cheese with shredded mozzarella and add Italian seasoning and grated Parmesan cheese for a cheesy Italian twist.

5. Tex-Mex Fusion: Spice things up by adding diced green chilies, cumin, and chili powder to the zucchini mixture, and top with crushed tortilla chips for a Tex-Mex flair.

6. Bacon Bliss: Stir in crispy cooked bacon pieces for added smokiness and crunch, perfect for bacon lovers.

7. Ranch Flavor: Substitute mayonnaise with ranch dressing and add a sprinkle of ranch seasoning mix for a tangy and flavorful variation.

8. Cheesy Jalapeño: Mix in diced jalapeños and Monterey Jack cheese for a spicy kick and gooey, cheesy goodness.

9. Creamy Mushroom: Sauté sliced mushrooms until golden brown and mix them into the zucchini mixture for a rich and earthy flavor.

10. Protein Powerhouse: Add cooked shredded chicken, turkey, or ham to the casserole for an extra dose of protein and heartiness.

11. Greek-Inspired: Add chopped fresh spinach, crumbled feta cheese, and a sprinkle of oregano for a Greek-inspired twist on this classic dish.

12. Buffalo Zucchini: Toss the diced zucchini in buffalo sauce before mixing it with the other ingredients for a spicy and tangy flavor explosion.

13. Cauliflower Swap: Replace half of the diced zucchini with cauliflower florets for a lower-carb version of the casserole that’s still packed with flavor.

14. Creamy Corn: Mix in a cup of sweet corn kernels for a pop of sweetness and added texture that complements the creamy, cheesy goodness.

15. Veggie-loaded: Amp up the vegetable content by adding diced bell peppers, carrots, and celery for a colorful and nutrient-rich casserole.

16. Italian Sausage: Brown Italian sausage and mix it into the zucchini mixture for a hearty and satisfying main course option.

17. Herb Crust: Combine chopped fresh herbs like rosemary, thyme, and sage with the breadcrumbs for a fragrant and flavorful crust.


1. Can I use frozen zucchini for this recipe? While fresh zucchini is preferred for optimal texture and flavor, you can use thawed and drained frozen zucchini in a pinch. However, be mindful that frozen zucchini may release more moisture, so adjust the recipe accordingly.

2. Can I make this casserole ahead of time? Yes, you can assemble the casserole ahead of time and refrigerate it, covered, until ready to bake. Just add a few extra minutes to the baking time if the casserole is cold when you put it in the oven.

3. Can I use a different type of cheese? Absolutely! Feel free to experiment with different types of cheese such as Gouda, Swiss, or Pepper Jack to customize the flavor to your liking.

4. Can I make this recipe gluten-free? Yes, you can use gluten-free breadcrumbs or crushed gluten-free crackers in place of Panko breadcrumbs to make the recipe gluten-free.

5. Can I omit the eggs from the recipe? While the eggs help bind the ingredients together and add richness to the casserole, you can omit them if necessary. However, the texture may be slightly different.

6. Can I add other vegetables to the casserole? Certainly! This recipe is versatile, and you can add a variety of vegetables such as spinach, broccoli, or cauliflower to suit your taste preferences.

7. How do I prevent the casserole from becoming watery? To prevent excess moisture, make sure to drain the cooked zucchini well before mixing it with the other ingredients. You can also sprinkle a layer of shredded cheese on top before adding the breadcrumbs to create a barrier.

8. Can I use low-fat mayonnaise to lighten up the recipe? Yes, you can use low-fat or light mayonnaise if you prefer, but keep in mind that it may alter the texture and flavor slightly.

9. Can I add meat to this casserole? Absolutely! Feel free to add cooked diced chicken, turkey, or ham for an extra protein boost and added flavor.

10. Can I adjust the seasonings to suit my taste? Of course! Feel free to adjust the amount of pepper, garlic powder, or any other seasonings to your liking. Taste the mixture before baking and adjust as needed.

Indulge in the creamy, cheesy goodness of our Easy Cheesy Zucchini Casserole. With its simple preparation and irresistible flavor, this dish is a fantastic way to enjoy the abundance of summer zucchini. Whether you’re hosting a gathering or simply craving a comforting meal, this casserole is sure to satisfy your taste buds and leave you craving for more. Try it today and elevate your dining experience with this delectable recipe!