This simple oven roasted zucchini recipe is the perfect healthy side dish. A sprinkling of Parmesan cheese at the end of cooking creates a flavorful, golden crust on each slice.
Jessica’s Recipe Science
- Cutting zucchini into thicker pieces helps minimize moisture loss and structural breakdown, keeping it tender while holding its shape.
- Starting with a hot sheet pan transfers heat quickly to the zucchini’s surface, promoting better browning and caramelization.
- Roasting at 400ºF quickly evaporates surface moisture, developing browned, concentrated flavor instead of just steaming the zucchini.
Featured Comment 13
“I just made this recipe – wow!! Great flavor! So easy to make. Thank you for my new favorite way to make zucchini!”—France
Why It Works
Sautéed, steamed, baked, or even spiralized into zoodles, zucchini is extremely versatile. I love slicing it into long strips to grill during barbecue season. However, roasting it in the oven adds interesting layers of flavor with very little effort. Plus, it’s low in calories and carbs, making it a nutritious ingredient for those looking to up their vegetable intake.
I use a mix of Italian ingredients to create a savory, herbaceous taste. Most, if not all, are already in your pantry. Toss the zucchini with olive oil and dried seasonings, and in minutes, the slices are tender. But to take it to the next level, I add a cheesy crust. This side dish steals the spotlight at dinnertime!
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Ingredients You’ll Need
- Zucchini: Dark green zucchini are thin-skinned and tender summer squash, perfect for roasting. Depending on your location, you can purchase them year-round at the market. Select medium zucchini for roasting. You’ll need about 3 to 4 squash.
- Oil: I prefer using olive oil or extra-virgin olive oil for roasting zucchini. It has a fruit flavor that complements the Italian seasoning.
- Seasoning: A savory combination of kosher salt, black pepper, dried Italian seasoning, garlic powder, and red chili flakes for subtle heat.
- Cheese: Grated Parmesan cheese adds a nutty, savory flavor and, as it melts, creates a golden crust on the zucchini.
- Herbs: I garnish the vegetables with freshly chopped parsley.
See the recipe card below for all ingredients and measurements (US and metric).
Ingredient Substitutions
The roasted zucchini recipe is easy to customize! Try these delicious options:
- Zucchini Swaps: Use other types of squash like Crookneck squash, yellow squash, or Zephyr.
- Seasoning: Try using sea salt, onion powder, smoked paprika, chili powder, cumin, coriander, curry powder, Cajun seasoning, or even taco seasoning. Add a hint of citrus, like lemon zest and a squeeze of lemon juice, right before serving.
- Cheese Options: Use a hard grating cheese like Parmigiano Reggiano or Pecorino Romano.
- Fresh Herbs: Add fresh basil, tarragon, dill, chives, cilantro, or oregano.
How to Roast Zucchini
Step 1: Heat the Oven
Turning up the oven to 400ºF (204ºC) creates a hot environment, perfect for quickly tenderizing and building flavor.
Step 2: Prepare the Zucchini
Dark green-fleshed summer squash is high in moisture, at over 90%! That means it shrinks considerably when cooked. So I cut it into at least ½-inch-thick slices. Cutting on a bias or angle creates larger pieces. This helps them keep their shape after roasting and not turn into shriveled-up mush. You can also quarter it into spears; keep an eye on cook time.
Step 3: Season the Zucchini
To enhance the squash’s delicate flavor, I look to my pantry. Olive oil not only prevents the zucchini slices from sticking to the pan but also helps to draw out the fat-soluble flavor molecules in herbs and spices. Concentrated dried Italian seasonings and garlic powder quickly infuse into the vegetable. For a hint of lingering spiciness, I add a small amount of red chili flakes.
Step 4: Preheat the Sheet Pan
To kickstart the cooking process, I preheat an oiled rimmed baking sheet before adding the vegetables. It’s similar to heating a pan on the stovetop, which promotes browning. This process cooks the squash evenly, on both the bottom and top.
Step 5: Roast the Zucchini
The oven tends to heat the exposed surface first, so I spread the zucchini in a single layer, giving each piece space to roast properly. It only takes about 5 to 7 minutes to cook the zucchini at 400ºF. You can stop here, but I like to add some extra flavor with Parmesan.
Step 6: Broil the Cheese
Sprinkling a dry-aged cheese like Parmesan on top of the vegetables creates a beautiful crust. Under the broiler, the high heat makes the cheese bubble, driving off moisture and turning it golden brown. It only takes a few minutes, so keep an eye on the progress. Otherwise, it could burn!
Step 7: To Serve
Add chopped parsley and Parmesan cheese right before serving to add freshness. It’s so delicious, my kids even enjoy eating their veggies! I like to pair it with chicken piccata, meatloaf, or pan seared salmon with creamy mashed potatoes for a gourmet meal.
Frequently Asked Questions
When you heat squash slices, the cut plant cells release moisture. If you cook them too long, they can become soggy. A high roasting temperature of 400 degrees, helps to turn some of the water into steam. Cutting thick slices and cooking for less than 10 minutes prevents mushiness. Alternatively, you can place the zucchini on a wire rack to circulate hot air underneath. However, this helps with evaporation and even cooking but results in less browning.
Yes, you can roast zucchini and yellow squash together. Yellow squash tends to have a thicker skin, but that shouldn’t affect roasting time.
Yes, you can roast zucchini with other vegetables. The key is to choose vegetables with similar cooking times or cut firmer vegetables into smaller pieces so everything finishes at the same time. Good options include yellow squash, bell peppers, cherry tomatoes, asparagus, green beans, and eggplant. For firmer vegetables such as broccoli, carrots, or larger pieces of onion, start roasting them a few minutes before adding the zucchini.
I don’t recommend freezing roasted zucchini because it can become very soft and watery when reheated. Zucchini has a high water content, and freezing forms ice crystals that damage the vegetable’s cell walls. When thawed and reheated, it releases more moisture, resulting in a mushy texture. Store in an airtight container in the fridge for up to 4 days.
More Zucchini Recipes
If you tried this Roasted Zucchini Recipe, please leave a 🌟 star rating and let me know how it went in the 📝 comments below!
Herb Roasted Zucchini with Parmesan
Ingredients
- 2 pounds zucchini, about 3 to 4
- 1 tablespoon olive oil, plus more for drizzling
- 1 teaspoon kosher salt
- ½ teaspoon dried Italian seasoning
- ¼ teaspoon garlic powder
- ¼ teaspoon black pepper
- ¼ teaspoon red chili flakes, optional
- 2 tablespoons grated parmesan cheese, plus more for garnish
- 1 tablespoon chopped parsley
Instructions
- Heat the Oven – Adjust the oven rack to the center position and preheat the oven to 400ºF (204ºC).
- Prepare the Zucchini – Rinse and dry the zucchini. Cut it on the bias into ½-inch-thick slices, about 2-3 inches long.
- Season the Zucchini – In a large bowl, toss the sliced zucchini with olive oil, salt, Italian seasoning, garlic powder, black pepper, and chili flakes (if using).
- Preheat the Sheet Pan – Lightly drizzle a large sheet pan with olive oil. For easier cleanup, line the pan with aluminum foil first. Place the pan in the oven for 2 to 3 minutes to preheat the cooking surface. Carefully remove the hot pan and place it on a wire rack to cool.
- Roast the Zucchini – Arrange the zucchini slices in a single layer on the pan. Roast the zucchini for about 5 to 7 minutes, until just fork-tender.
- Broil the Cheese – Heat the oven to broil. Sprinkle the Parmesan cheese on top of the zucchini. Broil in the center of the oven for about 2 to 4 minutes, until lightly browned.
- To Serve – Garnish the zucchini with fresh parsley and extra Parmesan cheese. Serve warm.
Notes
- Serving Size: About 1 cup
- Storage: Let the roasted zucchini cool completely, then transfer it to an airtight container and refrigerate for up to 4 days.
Nutrition Facts
Percent Daily Values are based on a 2000-calorie diet. All nutritional information is based on estimated third-party calculations. Each recipe and nutritional value will vary depending on the brands you use, measuring methods, and portion sizes per household.
MKB says
Really easy to prep ahead of time (cut zuke, mix up spices) and very tasty!
Jessica Gavin says
Thrilled to hear that you found the roasted zucchini easy and delicious!
Debra says
Oh my, Goodness! Once my Parmesan Roadted Zucchini came out of the oven, I couldn’t stop eating it. So crispy and delicious, full of flavor. I am trying to increase the amount of vegetables I eat each day, and with recipes like this I am finding success. My cardiologist thanks you. ~Debra
Jessica Gavin says
Woo-hoo! I’m so happy that you are enjoyed the yummy and healthy roasted zucchini recipe, Debra!
France says
I just made this recipe – wow!! Great flavor! So easy to make. Thank you, Jessica, for my new favorite way to make zucchini!
Jessica Gavin says
Amazing!
Maggie Costello says
Hi Jessica, 🙂
Just wanted to tell you that your Zucchini/Squash recipe with Italian Seasonings came out much better than I’ve ever experienced Zucchini or Squash. It was perfect! Thank you so much for your recipes!! 🙂
All the best to you,
Maggie Costello
Marie says
I love quick and easy. It was delicious especially with fresh zucchini.
Jessica Gavin says
Thanks, Marie!
Betty says
Absolutely easy and delicious, I can see we will be making this often. Thank you.
Jessica Gavin says
Thank you for your feedback, Betty!
Sr Kathleen Luppens says
It looks delicious but what makes the potassium so high?
Jessica Gavin says
The potassium is coming from the zucchini.