Savor the flavors of summer with our Zucchini Gratin with Yellow Squash recipe. This delightful dish features tender zucchini and yellow squash, layered with creamy Parmesan-infused sauce and topped with melted smoked gouda cheese. Perfectly baked to golden perfection, this gratin is a comforting and indulgent side dish that pairs beautifully with any meal.

Why Make Zucchini Gratin with Yellow Squash

Zucchini Gratin with Yellow Squash offers a delicious way to enjoy the abundance of summer squash in a rich and creamy dish. With its simple ingredients and straightforward preparation, this gratin is a versatile side dish that complements a wide range of main courses. Whether you’re hosting a dinner party or looking for a comforting side dish for a family meal, this recipe is sure to please even the pickiest of eaters.

How to Make Zucchini Gratin with Yellow Squash

Note: In this section only generate the instructions.

  1. Preheat the Oven:
    • Preheat the oven to 450 degrees Fahrenheit.
  2. Prepare the Gratin:
    • In an oven-proof skillet, melt butter over medium heat.
    • Add thinly sliced onion to the skillet and cook until the edges start to brown, approximately 5 minutes.
    • Add minced garlic to the skillet and cook for an additional 1 minute.
    • Pour in the heavy cream and simmer until bubbly and starting to thicken.
    • Slowly stir in grated Parmesan cheese until well combined.
    • Add sliced zucchini and yellow squash to the skillet and cook for an additional 4-5 minutes, until slightly softened.
  3. Bake the Gratin:
    • Sprinkle shredded smoked gouda cheese over the top of the zucchini and yellow squash mixture.
    • Transfer the skillet to the preheated oven and bake for 15-20 minutes, or until the cheese is golden brown and bubbly.

Serving Suggestions

Serve Zucchini Gratin with Yellow Squash as a delicious side dish alongside grilled chicken, steak, or fish. It also pairs well with a fresh garden salad or roasted vegetables for a complete and satisfying meal. Garnish with chopped fresh herbs such as parsley or basil for an extra burst of flavor and color.

Storage Info

Any leftover Zucchini Gratin with Yellow Squash can be stored in an airtight container in the refrigerator for up to three days. To reheat, simply transfer the gratin to an oven-safe dish and bake in a preheated oven until warmed through.

Techniques or Tips

  • Use a mandoline slicer to ensure uniform thickness when slicing the zucchini and yellow squash.
  • For a crispier topping, broil the gratin for an additional 1-2 minutes after baking until the cheese is bubbly and golden brown.
  • Feel free to customize the gratin by adding additional ingredients such as diced tomatoes, sliced bell peppers, or fresh herbs.


Experiment with different types of cheese to create unique flavor variations of this gratin. Try substituting the smoked gouda with gruyere, cheddar, or fontina cheese for a different taste profile. You can also add breadcrumbs or crushed crackers to the cheese topping for added texture and crunch.

FAQs about Zucchini Gratin with Yellow Squash

Q: Can I use different types of squash in this recipe? A: Yes, you can customize this gratin by using a variety of summer squash such as pattypan squash, crookneck squash, or zephyr squash in addition to or instead of yellow squash.

Q: Can I make this gratin ahead of time? A: Yes, you can prepare the gratin up to the baking step ahead of time and store it covered in the refrigerator until ready to bake. Simply bake as directed when ready to serve.

Q: Can I freeze leftover gratin? A: While you can freeze leftover gratin, the texture may become slightly watery upon thawing and reheating. It’s best enjoyed fresh for the best flavor and texture.

For ingredients and comprehensive cooking instructions, please proceed to the next page or click the open button (>)—and be sure to share with your Facebook friends!

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Written by Belkys mieles

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