Grilled zucchini is a simple summer side dish that celebrates the best of the season. When you slice fresh zucchini into thick planks, season them with a savory blend, and cook them over direct heat, the vegetable transforms.
The exterior gets lightly charred and caramelized, while the interior stays tender and juicy. Best of all, the whole process takes about 10 minutes of cook time, making it a go to for busy weeknights or backyard barbecues.
I first started grilling zucchini years ago when my garden overflowed with it every July. My go to method quickly became a family favorite because the high heat does something magical: it draws out just enough moisture to concentrate the flavor and prevent the dreaded sogginess.
The result is a side dish that tastes fresh and smoky, with a pleasant bite that pairs beautifully with almost any grilled main.
The secret lies in a quick, high heat sear that chars the surface and locks in tenderness. As the zucchini hits the hot grates, natural sugars begin to caramelize, creating deep, toasty notes you never get from steaming or sautéeing.
At the same time, the intense heat evaporates some of the vegetable’s water content, zucchini is over 90% water, so the slices firm up instead of turning into mush.
A light coating of olive oil acts as a barrier, preventing sticking and encouraging a golden, flavorful crust while keeping the inside moist.
Because the recipe requires only a handful of pantry spices and about 20 minutes total, it is one of the most reliable ways to turn an ordinary vegetable into a vibrant, healthy side.
Whether you are feeding picky eaters, following a low carb lifestyle, or simply looking for a no fuss BBQ companion, this dish delivers. Once you master these simple tips, you will reach for grilled zucchini again and again all summer long.
Zucchini on its own has a mild, almost neutral flavor with just a whisper of natural sweetness. That subtle taste blossoms under high heat. Grilling unlocks a depth of flavor you simply cannot get from steaming or sautéeing.
The dry heat of the grill grate creates those beautiful char marks, which are not just for looks, they add a slightly smoky, toasty note that makes the vegetable feel substantial and satisfying.
There are a few practical reasons this method delivers such reliable results. Cutting the squash lengthwise into half inch planks gives each piece enough structure to survive the grates without falling apart.
A light coating of olive oil not only helps the seasoning stick but also promotes a crisp, golden crust while locking in moisture.
Since we use dried seasonings instead of wet marinades, we avoid adding extra liquid that could cause the zucchini to steam rather than sear.
The key to perfect grilled zucchini is thick slices, a hot clean grill, and a hands off approach while the marks develop.
This side dish is incredibly versatile. I often serve it alongside cedar planked salmon for a light, elegant meal, or I pile it on the same platter as grilled burgers and corn on the cob for a classic cookout spread.
It even works as part of a meal prep routine, grilled zucchini holds up well in the fridge and reheats beautifully. For more inspiration, our grilled side dish recipes page has additional ideas that transform ordinary vegetables into char kissed favorites.
Great grilled zucchini starts with great produce. Here is everything you need, along with a few pro selection tips.
Zucchini: 2 pounds, about 3 large, 7 to 8 inches long and 9 to 10 ounces each. Look for firm, emerald green squash with no soft spots or bruising. Peak season runs from May to July, but quality zucchini is generally available year round.
Olive oil: 1 tablespoon for brushing the slices, plus more to grease the grates. A good quality extra virgin olive oil adds fruity notes that complement the char.
Kosher salt: 1 teaspoon. The coarser grains dissolve more slowly, seasoning the surface evenly without drawing out too much water.
Dried Italian seasoning: ½ teaspoon. A convenient blend of herbs like oregano, basil, and thyme that gives the zucchini a Mediterranean character.
Black pepper: ¼ teaspoon, freshly ground if possible.
Garlic powder: ¼ teaspoon.
Onion powder: ¼ teaspoon.
Fresh parsley or sliced basil: 1 tablespoon, for garnish.
Parmesan cheese (optional): 1 tablespoon, finely grated. This adds a salty, nutty finish. Omit it to keep the dish dairy free.
This simple lineup proves that you do not need a long list of ingredients to create a memorable side. The combination of salt, Italian herbs, and garlic onion backbone is tried and true, reminiscent of many simple grilled zucchini with herbs recipes.
If you enjoy the Parmesan touch, you might also want to try our Grilled Zucchini Parmesan, which takes that cheesy goodness a step further.
Ingredient Substitutions
One of the best things about this recipe is how adaptable it is. Whether you want to use what is already in your fridge or switch things up for a different flavor profile, here are some easy swaps and add ons.
Swap the squash: Yellow summer squash or calabacita (Mexican squash) works beautifully in place of zucchini. Calabacita is slightly lighter green and naturally a bit sweeter, so it will caramelize even more deeply.
Play with herbs: Instead of the Italian blend, try about ¼ teaspoon each of dried basil, oregano, rosemary, or thyme. You can mix and match depending on what you serve it with.
Add some heat: For a spicy kick, stir ¼ teaspoon of red pepper flakes, a pinch of chili powder, or chipotle chili powder into the dry seasoning mix.
Go crunchy: Sprinkle toasted breadcrumbs, chopped toasted walnuts, or pine nuts over the finished zucchini for extra texture.
Sauce it up: Serve the grilled zucchini with a drizzle of homemade pesto, green goddess dressing, tzatziki, or even ranch dressing for a creamy contrast.
These variations keep the dish interesting whether you are serving it on a weeknight, at a cookout, or as part of a party spread. You can even prep a few different topping combinations and let guests customize their own.
How to Make Grilled Zucchini
Follow these five straightforward steps, and you will have restaurant worthy grilled zucchini on the table in about 20 minutes total. The recipe yields 4 servings, perfect as a side.
Prepare the zucchini: Trim both ends, then slice each squash lengthwise into ½ inch thick planks. Keep the skin on, it helps the slices hold their shape and adds fiber. For very large zucchini, you can also cut them on the diagonal or quarter them into batons. Lay the pieces on a sheet tray.
Mix the dry seasonings: In a small bowl, combine 1 teaspoon kosher salt, ½ teaspoon Italian seasoning, ¼ teaspoon black pepper, ¼ teaspoon garlic powder, and ¼ teaspoon onion powder. Stir to blend. Using only dry spices here prevents adding moisture that could cause the zucchini to steam.
Oil and season: Brush both sides of each zucchini slice generously with olive oil, then sprinkle the seasoning mixture evenly over both sides. The oil helps the spices adhere and dissolves their fat soluble flavor compounds, which means every bite carries the full blend.
Grill to char perfection: Preheat your gas or charcoal grill (or a stovetop grill pan) to medium heat, between 350 and 375°F. Clean and oil the grates thoroughly. Place the zucchini slices at a 45 degree angle to the grates, this not only gives you those classic cross hatch grill marks but also prevents the pieces from slipping through. Lightly press down to ensure good contact, cover the grill, and cook undisturbed for about 4 to 5 minutes, until golden brown lines form. Flip, cover again, and cook the second side for 3 to 5 minutes, until the zucchini is tender but still holds its shape (a fork should pierce without mushy collapse).
Finish and serve: Transfer the slices to a serving platter. While they are still warm, garnish with 1 tablespoon of chopped fresh parsley or sliced basil, and if desired, sprinkle 1 tablespoon of grated Parmesan on top. Serve immediately.
Pro Tip: Let the grilled zucchini rest for a minute or two before serving. The residual heat finishes the tender bite without overcooking, ensuring the slices stay firm and flavorful.
If you are a visual learner and want to see a similar technique in action, the grilled zucchini recipe from Allrecipes offers another approachable version. And if you are looking to turn this into a full meal, check out our entire collection of grilled vegetables and proteins.
Here is the nutritional breakdown per serving (based on 4 servings):
Nutrient
Amount
Calories
70
Carbohydrates
8g
Protein
7g
Fat
3g
Saturated Fat
1g
Fiber
3g
Sugar
0.04g
Sodium
318mg
Cholesterol
1mg
Frequently Asked Questions
How do you keep grilled zucchini from getting soggy?
Use medium heat, cut the zucchini into 1/2-inch thick slices, and grill it without moving the pieces too soon. Lightly oiling the surface helps it brown instead of steam, and the zucchini should be cooked until tender but still hold its shape. Overcooking is the main reason it turns watery.
Do you need to peel zucchini before grilling?
No, you do not need to peel zucchini before grilling. The skin helps the slices hold together on the grill and adds a little extra fiber. Just trim the ends and cut the zucchini lengthwise into thick slices or diagonal pieces.
How long does it take to grill zucchini?
Grilled zucchini usually takes about 4 to 5 minutes on the first side and 3 to 5 minutes after flipping. The grill should be preheated to medium heat, around 350 to 375°F, for the best char and tender texture. Total cook time is about 10 minutes.
What seasonings go best on grilled zucchini?
A simple mix of kosher salt, dried Italian seasoning, black pepper, garlic powder, and onion powder works very well. Fresh parsley or basil and a little Parmesan add extra flavor after grilling. For a different finish, you can also use herbs, red pepper flakes, or a spoonful of pesto.
What Is Grilled Zucchini? Grilled zucchini is a simple summer side dish that celebrates the best of the season.
Total Time:20 min
Yield:4 servings 1x
Ingredients
Scale
2 pound zucchini, about 3 large 1 tablespoon olive oil, plus more for greasing grates 1 teaspoon kosher salt 1/2 teaspoon dried italian seasoning 1/4 teaspoon black pepper 1/4 teaspoon garlic powder 1/4 teaspoon onion powder 1 tablespoon chopped parsley, or sliced basil 1 tablespoon parmesan cheese
Instructions
1-Trim the stem and end off the: Trim the stem and end off the zucchini. Slice lengthwise into ½-inch thick pieces. Alternatively, cut into diagonal pieces. Place on a sheet tray. 2-In a small bowl, combine salt, Italian: In a small bowl, combine salt, Italian seasoning, black pepper, garlic powder, and onion powder. 3-Brush both sides of the sliced zucchini: Brush both sides of the sliced zucchini with olive oil. Evenly season both sides with the salt mixture. 4-Preheat the grill or grill pan over: Preheat the grill or grill pan over medium heat between 350 and 375°F (160 to 177°C). Clean the grates and grease with olive oil. Place the zucchini slices at a 45-degree angle to the grates. This will give a nice char mark pattern and prevent the pieces from falling through the grates. Lightly press down to make contact with the grates. Cover and cook until golden brown lines form, about 4 to 5 minutes. Flip, cover, and cook until tender but not mushy, about 3 to 5 minutes. 5-Transfer the pieces to a serving dish: Transfer the pieces to a serving dish and garnish with chopped parsley and parmesan cheese (if using).
Last Step:
Please leave a rating and comment letting us know how you liked this recipe! This helps our business to thrive and continue providing free, high-quality recipes for you.
