Grilled Zucchini

5 from 5 votes
↓ Jump to Recipe 4

This post may contain affiliate links | disclosure policy

Grilled zucchini is a quick and healthy summer side dish, ready in just 10 minutes! They are seasoned with savory spices for maximum flavor, then cooked until lightly charred and tender. It’s the perfect pairing with a variety of barbecued foods.

Grilled zucchini slices with brown char marks from the barbecue grates.

Zucchini is one of the easiest side dishes to prepare. You can purchase green-skinned squash year around at most markets. They have a neutral taste with a hint of sweetness that develops when cooked. For this recipe, I slice them in half lengthwise, then use olive oil and a blend of dried seasonings to enhance their flavor.

Toss the squash on the grill, and let it sizzle! Stunning grill marks will form in a few minutes, and the slices will soften and tenderize. Serve with a juicy burger, cedar planked salmon, crisp corn on the cobb, or barbecued chicken for a complete meal.

Ingredients to season and cook zucchini on the grill.

Zucchini selection

Choose zucchini that are emerald green in color and feel firm, with no soft spots or bruising. Being a summer squash, their peak season is from May to July, but you can often find it throughout the year as it’s grown in various warm weather regions. Pick a zucchini about 7 to 8-inches long and 9 to 10 ounces in weight.

Typically you can get three to four ½-inch slices from one zucchini this size depending on width. For smaller zucchini, it may be best to halve them. Yellow squash or calabacita (Mexican squash) can be used instead. Yellow tends to be slightly thicker skinned with a smaller tapering end. Calabcita is lighter green in color and a bit sweeter.

Recipe Resources

How to cut zucchini for grilling

Cut the zucchini lengthwise into ½-inch thick slices. It’s important to slice it wide enough to preserve its structure, so it can be easily lifted off the grill and not fall through the grates. This squash is composed of over 90% water and will get very mushy and hard to handle if sliced too thin. 

Make sure to leave the skin on to hold the interior together while cooking on the barbecue. Alternatively, you can cut the vegetable on a diagonal for smaller pieces. They can also be quartered lengthwise into batons if you prefer sticks.

Benefits of dried seasonings

Dried seasonings are concentrated in flavor and are very low in moisture. They prevent adding extra water to the vegetable that could dilute its flavor and make it steam on the grill. You can keep the seasonings simple with salt and pepper, but I add onion and garlic powder. The dehydrated and ground alliums add a pleasant roasted, earthy taste. Use Italian seasoning or individual dried herbs like basil, oregano, rosemary, or thyme for a herbaceous flavor.

Coat the sliced squash with olive oil to help the spices stick to the surface, not the grill. The oil also helps the fat-soluble flavor compounds in the seasonings dissolve for better taste. If you like it spicy, sprinkle on red pepper flakes, chili powder, or chipotle chili powder.

Close up photo of dried seasoning mixture in a small bowl.

How to grill zucchini

To achieve stunning grill marks, preheat the barbecue and grease the grates to prevent sticking. Heat the grill to medium, about 350 to 375°F (160 to 177°C). Add the zucchini at a 45-degree angle to the grates to get a nice design and prevent them from falling through.

The key is to press the slices down on the hot grates lightly. This process drives off moisture which could convert to steam and turns areas in contact with the grate golden brown. Do not move the pieces. Once you see those lines form, give it a flip and cook until tender. A grill pan works great if you prefer to cook the zucchini on a stovetop.

Slices of zucchini on a sheet pan with seasoning sprinkled on top.

How long to grill zucchini

For ½-inch thick pieces, it takes about 3 to 5 minutes per side. I like to cook the zucchini just past crisp tender, then let it sit for a few minutes before serving for gently carry-over cooking to occur. Each grill varies, so keep a close eye on the vegetable’s visual change.

They should pierce easily with a fork and retain their structure along the edges. The slices should be glossy with some moisture on the surface. Overcooking will create dry and mushy pieces.

Extra ways to flavor grilled zucchini

I like to garnish with chopped parsley or thin slices of fresh basil. Add some grated parmesan cheese or crumbled feta on top. Toast up some bread crumbs or nuts for a crunchy element. If you want to serve it with a sauce, try a homemade pesto, green goddess dressing, tzatziki, balsamic glaze, or ranch sauce.

Several grilled zucchini slices cooking on a barbecue.

Serve this with


Can you eat zucchini skin?

Yes! The green skin is thin and tender. It’s full of fiber and nutrients, so I recommend keeping it on. The squash is also high in moisture, so the skin helps keep the vegetable intact during the cooking process.

Should you salt zucchini before grilling?

The squash slices need not be pre-salted before grilling to draw out moisture and bitterness like you would for eggplant. I recommend just seasoning with salt and other desired spices before grilling to add a pleasant savory taste. You can lightly pat dry the squash before cooking if you notice moisture to prevent steaming on the grill.

How do you grill zucchini without getting soggy?

The key is to use high enough heat to get the grates searing the zucchini as soon as it hits the grill. Grilling adds terrific flavor to the surface while quickly cooking the flesh. If left in the heat for too long, more moisture is released. You’ll notice that overcooked pieces get soggy and mushy in texture. The zucchini should have a tender bite.

Several slices of grilled zucchini served on a white platter.

Should I marinate zucchini before grilling?

If marinating, then it’s best to do so after grilling. The cell walls contain over 90% moisture, so a wet, salty and acidic solution will draw out the water, break down the structure, and make the vegetable mushy if not completely drained and dried. It’s better to use oil and dried seasonings first to flavor the surface. Add a dressing or drizzle with balsamic vinegar, red wine vinegar, or citrus such as lemon juice while still warm to brighten the taste before serving.

Grilled Zucchini

Grilled zucchini is a quick and healthy summer side dish, ready in just 10 minutes! It's the perfect side dish to other barbecued foods.
5 from 5 votes
Prep Time10 minutes
Cook Time10 minutes
Total Time20 minutes
Servings 4 servings
Course Side
Cuisine American


  • 2 pounds zucchini, about 3 large
  • 1 tablespoons olive oil, plus more for greasing grates
  • 1 teaspoon kosher salt
  • ½ teaspoon dried italian seasoning
  • ¼ teaspoon black pepper
  • ¼ teaspoon garlic powder
  • ¼ teaspoon onion powder
  • 1 tablespoon chopped parsley, or sliced basil
  • 1 tablespoon parmesan cheese, optional


  • Cut the Zucchini – 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.
  • Add the Seasonings – In a small bowl, combine salt, Italian seasoning, black pepper, garlic powder, and onion powder. Brush both sides of the sliced zucchini with olive oil. Evenly season both sides with the salt mixture.
  • Grill the Zucchini – Preheat the grill or grill pan over medium heat between 350 to 375°F (160 to 177°C). Clean the grill grates and grease with olive oil. Place the zucchini slices on the grill 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 on the pieces 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.
  • To Serve – Transfer the zucchini to a serving dish, garnish with chopped parsley and parmesan cheese (if using).


  • Storing: Cover and store grilled zucchini in the refrigerator for up to 5 days.
  • Reheating: Cover and microwave on high heat in 15 to 30-second increments until warm.

Nutrition Facts

Serves: 4 servings
Calories 70kcal (4%)Carbohydrates 8g (3%)Protein 7g (14%)Fat 3g (5%)Saturated Fat 1g (5%)Polyunsaturated Fat 1gMonounsaturated Fat 1gCholesterol 1mgSodium 318mg (13%)Potassium 1054mg (30%)Fiber 3g (12%)Sugar 0.04gVitamin A 1210IU (24%)Vitamin C 79mg (96%)Calcium 69mg (7%)Iron 2mg (11%)

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.

Tried this recipe?

Tag me on Instagram. I'd love to see how it turns out!

Tag @jessica_gavin

Jessica Gavin

I'm a culinary school graduate, cookbook author, and a mom who loves croissants! My passion is creating recipes and sharing the science behind cooking to help you gain confidence in the kitchen.

Quick & Easy Meals in Under 30 Minutes!
Get 25 simple meals your whole family will love.
Jessica Gavin standing in the kitchen

You May Also Like

Reader Interactions

Leave a Comment

Your email address will not be published. Required fields are marked *

Recipe Rating

4 Comments Leave a comment or review

  1. Robert H. says

    Another delicious side dish from Jessica! As a matter of choice, I increased the amount of garlic and onion powders to 1/2 tsp, and added 3/4 tsp of smoked paprika to the salt mixture for added flavor. Instead of grilling directly on the grates. I tried the recipe inside a grill rack, in a grill pan and also on a grill mat. This prevented any slices from falling through the grates and all methods worked equally well – and there’s no need to oil the grates. Grill marks appeared with a mat, but they’re sacrificed when using a pan or rack. My total grill times for each method was 7 minutes on a 10 minute preheated grill. I then plated the hot slices, drizzled them with balsamic glaze, sprinkled with Parmesan and covered them with foil to keep warm and melt the cheese.

  2. Matt H. says

    When you say “cover” in the grilling instructions, do you mean just closing the lid on the grill, or laying foil over them, or do you use some other method?