This Easy Zucchini Au Gratin is the perfect side dish for any occasion. Bursting with cheesy goodness, this baked casserole features layers of zucchini, cheddar, mozzarella, and Parmesan cheese. It’s a fantastic way to enjoy vegetables while satisfying your cravings for comfort food. Whether it’s a family dinner or a gathering with friends, this dish will surely impress everyone at the table.
Why You’ll Love This Recipe
- Quick Preparation: This recipe is straightforward and can be made in under 20 minutes of prep time.
- Rich Flavor: The blend of cheeses creates a deliciously creamy and savory taste that complements the zucchini perfectly.
- Versatile Dish: Serve it as a side or even as a vegetarian main course; it fits well into various meal plans.
- Healthy Ingredients: Packed with fresh zucchini and wholesome dairy, it’s a nutritious choice for your meals.
- Crowd-Pleaser: With its gooey texture and cheesy layers, it’s bound to be a hit among kids and adults alike.
Tools and Preparation
Gathering the right tools will make your cooking experience smoother. Here are some essential tools you’ll need:
Essential Tools and Equipment
- Baking dish (9×13 inches)
- Cutting board
- Sharp knife
- Saucepan
- Mixing spoon
- Measuring cups
Importance of Each Tool
- Baking dish: A 9×13 inch baking dish ensures even cooking and allows for plenty of room to layer your ingredients.
- Cutting board: Protects your countertops while providing a stable surface for slicing zucchini.
- Saucepan: Essential for melting and mixing the cheese sauce, ensuring it combines perfectly without burning.

Ingredients
This Easy Zucchini Au Gratin is a healthy baked casserole loaded with cheese! This gooey side dish is layered with cheddar, mozzarella, and Parmesan cheese for the perfect dose of flavor.
Ingredients:
– 3-4 whole fresh zucchini (Sliced 1/4-1/2 inch thick into slices. Unsliced, mine weighed 3 pounds.)
– 1 tablespoon butter
– 2 garlic cloves (minced)
– 1/4 cup heavy whipping cream
– 4 oz cream cheese
– 1 cup shredded cheddar cheese (Divided into 2 servings.)
– 1/4 cup shredded parmesan reggiano cheese
– 1 teaspoon onion powder
– salt and pepper to taste
– 1/2 cup shredded mozzarella cheese
How to Make Easy Zucchini Au Gratin
Step 1: Preheat the Oven
Preheat your oven to 400 degrees Fahrenheit to ensure it’s hot when you place your casserole inside.
Step 2: Prepare the Zucchini
- Place the sliced zucchini on a flat surface lined with towels or paper towels.
- Sprinkle both sides of the zucchini with salt.
- Allow the zucchini to sit for 30 minutes. This process helps sweat out excess moisture. Afterward, blot and wring out any remaining moisture.
Step 3: Make the Cheese Sauce
While the zucchini rests:
* Heat a saucepan over medium heat and add the butter.
* Once melted, add minced garlic and sauté until fragrant for about two minutes.
* Stir in cream cheese, heavy whipping cream, Parmesan reggiano, and half of the shredded cheddar cheese. Mix well.
* Add onion powder, salt, and pepper to taste. Continuously stir until all cheeses melt together smoothly.
Step 4: Assemble the Casserole
In a 9×13 baking dish:
* Arrange the zucchini slices in rows across the bottom.
* Drizzle the prepared cheese sauce evenly over the zucchini.
* Sprinkle the remaining half of shredded cheddar cheese followed by mozzarella on top.
Step 5: Bake
Place in your preheated oven uncovered:
* Bake for 30-35 minutes until golden brown on top. For an extra crispy finish, turn on the broil function during the last few minutes of baking.
Step 6: Cool Before Serving
Let your Easy Zucchini Au Gratin cool slightly before serving. Enjoy this delightful dish warm!
How to Serve Easy Zucchini Au Gratin
Easy Zucchini Au Gratin is a versatile side dish that can complement a variety of main courses. Its rich cheesy flavor and comforting texture make it a fantastic addition to any meal. Here are some serving suggestions to enhance your dining experience.
Pair with Grilled Chicken
- Juicy grilled chicken breast pairs well with the creamy layers of zucchini, creating a balanced plate.
Serve with Roasted Vegetables
- A colorful medley of roasted vegetables can add a nutritious crunch that complements the soft texture of the au gratin.
Enjoy with Beef Tacos
- The rich, cheesy flavors of zucchini au gratin can be a delightful contrast to savory beef tacos, adding depth to your meal.
Accompany with Quinoa Salad
- A light quinoa salad brings freshness and healthiness to the table, enhancing the overall dining experience.
Plate alongside Turkey Burgers
- The creamy zucchini makes for an excellent side with turkey burgers, making each bite satisfying and flavorful.
Pair with Baked Fish
- Crispy baked fish topped with herbs provides a lighter option that contrasts beautifully with the richness of the gratin.
How to Perfect Easy Zucchini Au Gratin
To ensure your Easy Zucchini Au Gratin turns out perfectly every time, consider these helpful tips. They will help you achieve the best flavor and texture for this delicious dish.
- Salt the zucchini: Salting the zucchini helps draw out excess moisture, preventing a watery dish after baking.
- Use fresh ingredients: Fresh cheese and vegetables enhance flavor and texture, making your gratin more enjoyable.
- Mix cheeses: Combining different types of cheese adds depth to the flavor profile. Consider adding Gouda or Gruyère for extra richness.
- Monitor baking time: Keep an eye on your dish while it bakes. Ovens vary in temperature, so adjust baking time as needed for desired browning.
- Broil for crispiness: If you prefer a crunchy top layer, broil for a few minutes at the end of baking for added texture.
- Let it cool slightly: Allowing the gratin to rest before serving helps firm up layers and makes slicing easier.
Best Side Dishes for Easy Zucchini Au Gratin
When serving Easy Zucchini Au Gratin, it’s great to have complementary side dishes that enhance your meal. Here are some excellent options:
- Garlic Mashed Potatoes: Creamy mashed potatoes infused with garlic provide comfort and pair beautifully with cheesy dishes.
- Steamed Green Beans: Bright green beans add color and crunch while balancing out richer flavors in the gratin.
- Caesar Salad: A classic Caesar salad offers crisp romaine lettuce tossed in tangy dressing, which contrasts nicely with the creamy gratin.
- Herbed Rice Pilaf: Fluffy rice pilaf cooked with herbs delivers a light and fragrant addition that complements zucchini au gratin well.
- Roasted Sweet Potatoes: The natural sweetness of roasted sweet potatoes enhances the savory notes in your dish.
- Chickpea Salad: A refreshing chickpea salad adds protein and bright flavors, making it a healthy companion to the au gratin.
Common Mistakes to Avoid
Avoiding common pitfalls can make your Easy Zucchini Au Gratin truly outstanding. Here are some mistakes to watch out for:
- Skipping the Salting Step: Not salting the zucchini can result in a watery dish. Always sprinkle salt on the slices and let them rest to draw out moisture.
- Underestimating Cooking Time: If you don’t bake long enough, the cheese won’t melt properly. Keep an eye on the oven and aim for that golden-brown top.
- Using Cold Ingredients: Adding cold cream cheese or heavy cream can affect how well it melts. Allow them to come to room temperature before using.
- Not Tasting the Sauce: Failing to taste your cheese sauce may lead to bland flavors. Adjust salt and seasonings before pouring over the zucchini.
- Overcrowding the Baking Dish: Stuffing too many zucchini layers can prevent even cooking. Arrange the slices neatly for better results.

Storage & Reheating Instructions
Refrigerator Storage
- Store in an airtight container for up to 3-4 days.
- Allow the dish to cool completely before sealing it.
Freezing Easy Zucchini Au Gratin
- Freeze in a freezer-safe container for up to 2-3 months.
- Wrap it tightly with plastic wrap before placing in a container to prevent freezer burn.
Reheating Easy Zucchini Au Gratin
- Oven: Preheat to 350°F (175°C) and bake covered for about 15-20 minutes until heated through.
- Microwave: Heat individual portions on medium power for about 1-2 minutes, stirring halfway through.
- Stovetop: Reheat in a skillet over low heat, stirring occasionally until warmed.
Frequently Asked Questions
Here are some frequently asked questions about making Easy Zucchini Au Gratin.
Can I use other vegetables in Easy Zucchini Au Gratin?
Yes! You can add vegetables like yellow squash or eggplant for variety and flavor.
How do I make this recipe lighter?
To lighten it up, consider using reduced-fat cheese or substituting half of the cream with broth.
Can I prepare Easy Zucchini Au Gratin ahead of time?
Absolutely! Prepare it in advance and store it in the fridge until you’re ready to bake it.
What can I serve with Easy Zucchini Au Gratin?
This dish pairs well with grilled chicken, fish, or a fresh salad as a delightful side.
Final Thoughts
Easy Zucchini Au Gratin is not only delicious but also versatile. You can customize it by adding different vegetables or adjusting the cheese types. This dish is perfect for any meal, so give it a try!
Easy Zucchini Au Gratin
Easy Zucchini Au Gratin is a delightful, creamy side dish that elevates your meal with its rich flavor and comforting texture. This baked casserole layers fresh zucchini with a blend of cheddar, mozzarella, and Parmesan cheese, creating a cheesy masterpiece that’s both satisfying and nutritious. Perfect for family dinners or gatherings with friends, this dish will impress everyone at the table. Not only does it offer a fantastic way to enjoy vegetables, but it’s also quick to prepare—ready in just under an hour.
- Prep Time: 20 minutes
- Cook Time: 35 minutes
- Total Time: 55 minutes
- Yield: Serves approximately 6
- Category: Side Dish
- Method: Baking
- Cuisine: American
Ingredients
- 3–4 medium fresh zucchini
- 1 tablespoon butter
- 2 garlic cloves, minced
- 1/4 cup heavy whipping cream
- 4 oz cream cheese
- 1 cup shredded cheddar cheese (divided)
- 1/4 cup shredded Parmesan cheese
- 1 teaspoon onion powder
- Salt and pepper to taste
- 1/2 cup shredded mozzarella cheese
Instructions
- Preheat your oven to 400°F.
- Slice zucchini and sprinkle with salt; let sit for 30 minutes to remove moisture.
- In a saucepan, melt butter over medium heat; sauté garlic until fragrant.
- Stir in cream cheese, heavy cream, Parmesan, and half of the cheddar until smooth.
- Layer zucchini in a baking dish, drizzle with cheese sauce, then top with remaining cheddar and mozzarella.
- Bake uncovered for 30-35 minutes until golden brown.
Nutrition
- Serving Size: 1 serving
- Calories: 305
- Sugar: 3g
- Sodium: 312mg
- Fat: 23g
- Saturated Fat: 13g
- Unsaturated Fat: 9g
- Trans Fat: 0g
- Carbohydrates: 12g
- Fiber: 2g
- Protein: 14g
- Cholesterol: 66mg
Leave a Comment