There’s something truly delightful about indulging in a fresh summer tomato and zucchini gratin. This dish embodies comfort and warmth, perfect for gatherings or quiet evenings at home. The combination of tender zucchinis and juicy tomatoes, topped with melted cheese, offers a taste sensation that feels both indulgent and wholesome. I find it’s one of those recipes that never fails to bring smiles to the dinner table.
At the heart of this gratin are the stars of summer cuisine: four medium zucchinis and four ripe tomatoes. Their vibrant colors and fresh flavors come together beautifully, enhanced by the rich, gooey goodness of mozzarella cheese and the sharp bite of Parmesan. The aroma of minced garlic, melded with fragrant dried basil and oregano, creates a warm, inviting scent that fills the kitchen as the dish bakes. A drizzle of olive oil adds that final touch, enriching the flavors while keeping the vegetables perfectly tender.
If you’re looking for a straightforward recipe that doesn’t compromise on flavor, this gratin is for you. Imagine preheating your oven, then simply layering those beautiful slices of zucchini and tomato in a baking dish. You’ll mix up a quick seasoning and sprinkle it over the vegetables like a gentle hug. With a drizzle of olive oil and a generous sprinkle of cheese atop, you can pop it into the oven. In just 30 to 40 minutes, you’ll have a dish that’s bubbling and golden, ready to impress.
This gratin shines in various settings. It’s equally delightful as a side dish for summer barbecues, a comforting main course for chilly nights, or a glorious centerpiece for potlucks. Wherever you serve it, this dish promises to be a memorable addition.
Why You’ll Love This Fresh Summer Tomato and Zucchini Gratin
- Quick: This dish comes together in just a few steps, making it ideal for busy weeknights.
- Simple Ingredients: With everyday ingredients, this recipe is accessible to anyone looking to create something delightful.
- High Comfort Factor: The combination of zucchini and tomatoes topped with molten cheese is pure comfort food.
- Versatile: Enjoy it as a side, a main, or even as a meal prep option; it works beautifully all ways.
- Seasonal Goodness: A fantastic way to make the most of summer’s fresh produce.
Zucchini Tips
When selecting zucchini for this gratin, opt for medium-sized zucchinis for the best results. Look for firm, smooth skin without any blemishes or soft spots. Fresh zucchini should feel dense and heavy for its size. If possible, consider purchasing from a local farmer’s market, where you’re more likely to find freshly picked produce. Wash them thoroughly before slicing to remove any residue. This will help maintain the garden-fresh flavor that this dish embodies.
Options for Substitutions
- Cheese Alternatives: Use goat cheese or feta for a tangier flavor.
- Herb Variations: Try fresh herbs like basil or thyme if you have them instead of dried.
- Different Vegetables: Add sliced bell peppers or eggplant for extra texture and flavor.
- Garlic Options: Substitute fresh garlic with garlic powder if you prefer a milder taste.
- Oil Alternatives: Use avocado oil instead of olive oil for a different flavor profile.
- Dairy-Free: Opt for vegan cheese to make this dish dairy-free.
Watch Out for These Mistakes
One common mistake is overcooking the gratin. When you bake it, keep an eye on the dish towards the end. If left too long, the vegetables can become mushy, and the cheese might burn. Aim for a bubbly top and tender vegetables, which typically happens around the 30 to 40-minute mark.
Another issue can arise from inadequate seasoning. Make sure to sprinkle the garlic mixture evenly over the layered vegetables to ensure consistent flavor throughout the dish. Taste as you go, adjusting salt and pepper to your liking for a delicious final result.
Finally, avoid adding the cheese too early in the baking process. You want it to melt and create that beautifully bubbly top right at the end. If you put it on too soon, it might brown before your vegetables are perfectly cooked.

What to Serve With Fresh Summer Tomato and Zucchini Gratin?
This gratin pairs wonderfully with a variety of dishes. Consider serving it alongside a simple green salad dressed with a light vinaigrette for a refreshing contrast. Grilled chicken or fish also works beautifully, adding protein to the meal. If you prefer something heartier, a side of quinoa or crusty bread can round out the experience. Each side dish complements the freshness of the gratin, creating a fulfilling meal that your guests will love.
Storage Instructions
Store: Place any leftovers in an airtight container in the refrigerator. They will keep for about 3 to 4 days.
Freeze: If you want to freeze this dish, it can last up to 2 months. Just be sure to let it cool completely before wrapping it tightly and placing it in a freezer-safe container.
Reheat: For stovetop reheating, place the gratin in a skillet over low heat until warmed through. In the microwave, heat in short bursts of about one minute, stirring in between, until evenly warmed.
Recipe Info
Preparation Time: 15 minutes
Cooking Time: 30-40 minutes
Total Time: Approximately 55-60 minutes
Level of Difficulty: Easy
Servings: 4-6, depending on portion size
Estimated Nutrition
Estimated nutrition for the whole recipe (without optional ingredients):
- Calories: 800-1000
- Protein: 40-50 grams
- Fat: 50-60 grams
- Carbohydrates: 50-60 grams
Ingredients
- 4 medium zucchinis, sliced
- 4 medium tomatoes, sliced
- 1 cup grated mozzarella cheese
- 1/2 cup grated Parmesan cheese
- 2 cloves garlic, minced
- 1 teaspoon dried basil
- 1 teaspoon dried oregano
- Salt and pepper to taste
- Olive oil
Step-by-Step Instructions
Step 1: Preheat Oven and Prep Baking Dish
Begin by preheating your oven to 350°F (175°C). While the oven is heating, prepare a large baking dish by lightly greasing it with olive oil to prevent sticking.
Step 2: Layer Vegetables
Once your oven is preheated, layer the sliced zucchinis and tomatoes alternately in the baking dish. This ensures that every bite offers a lovely mix of both vegetables. Aim to cover the bottom of the dish fully for even cooking.
Step 3: Prepare Garlic Mixture
In a small bowl, combine the minced garlic, dried basil, dried oregano, salt, and pepper. This mixture will infuse your vegetables with flavor, so ensure it’s well mixed.
Step 4: Season the Vegetables
Sprinkle the garlic mixture evenly over the layered vegetables. This step is crucial for imparting that wonderful aroma and taste throughout the gratin.
Step 5: Add Olive Oil and Cheese
Drizzle olive oil generously over the top of the layered vegetables. After that, sprinkle both the mozzarella and Parmesan cheeses evenly to create a perfect cheesy crust.
Step 6: Bake the Gratin
Place the baking dish in the preheated oven and bake for about 30 to 40 minutes. Watch for the cheese to become bubbly and golden, and ensure that the vegetables are tender.
Step 7: Cool and Serve
Once baked, remove the gratin from the oven and let it cool slightly before serving. This allows the flavors to settle and makes it easier to serve.

In conclusion, the fresh summer tomato and zucchini gratin is a delightful dish that’s easy to prepare and packed with flavor. You can enjoy it as a main course or a side, making it versatile for many meals. I encourage you to try this recipe soon, and feel free to share your experiences or explore more culinary delights with us. Happy cooking!
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Fresh Summer Tomato and Zucchini Gratin
- Prep Time: 15 minutes
- Cook Time: 40 minutes
- Total Time: 55 minutes
- Yield: 4 servings 1x
- Category: Main Course
- Method: Baking
- Cuisine: Italian
- Diet: Vegetarian
Description
A delightful summer dish featuring layers of zucchini and tomatoes topped with melted mozzarella and Parmesan cheese.
Ingredients
- 4 medium zucchinis, sliced
- 4 medium tomatoes, sliced
- 1 cup grated mozzarella cheese
- 1/2 cup grated Parmesan cheese
- 2 cloves garlic, minced
- 1 teaspoon dried basil
- 1 teaspoon dried oregano
- Salt and pepper to taste
- Olive oil
Instructions
- Preheat your oven to 350°F (175°C) and grease a large baking dish with olive oil.
- Layer the sliced zucchinis and tomatoes alternately in the baking dish.
- Combine minced garlic, dried basil, dried oregano, salt, and pepper in a small bowl.
- Sprinkle the garlic mixture evenly over the layered vegetables.
- Drizzle olive oil over the top and sprinkle with mozzarella and Parmesan cheese.
- Bake for 30 to 40 minutes until cheese is bubbly and golden, and vegetables are tender.
- Cool slightly and serve.
Notes
Serve as a side dish, a main course, or a meal prep option. Pairs well with green salads, grilled chicken, or quinoa.
Nutrition
- Serving Size: 1 serving
- Calories: 800
- Sugar: 7g
- Sodium: 800mg
- Fat: 55g
- Saturated Fat: 25g
- Unsaturated Fat: 30g
- Trans Fat: 0g
- Carbohydrates: 50g
- Fiber: 6g
- Protein: 45g
- Cholesterol: 120mg