How To Grill A Large Zucchini

To grill a large zucchini, you want to slice it into planks or spears, season it well, and cook it over medium-high heat until you get those beautiful char marks.
 
It’s a fantastic way to enjoy a bumper crop from your garden without turning on the oven.
 
If you’ve ever wondered how to grill a large zucchini without it turning into a mushy mess, you’re in the right place.
 
Large zucchini can be tricky because of their high water content.
 
But with the right technique, learning how to grill a large zucchini is actually quite simple and the results are delicious.
 
In this post, we’ll walk through how to grill a large zucchini step by step, covering prep, cooking, and serving.
 
Let’s fire up the grill.
 

How to Grill a Large Zucchini

 
Knowing how to grill a large zucchini starts with understanding its unique texture.
 
Unlike small, tender zucchini, the large ones have a lot of water and a thicker skin.
 
That means you can’t just toss them on the grates whole and hope for the best.
 
Here’s how to grill a large zucchini so it comes out perfectly tender with a smoky finish.
 

1. Choose the Right Zucchini

 
When you’re planning how to grill a large zucchini, start by picking one that’s firm and heavy for its size.
 
The skin should be glossy, not dull or wrinkled.
 
If the zucchini is overly large—think baseball bat—the seeds inside can be tough and the flesh can be spongy.
 
For the best results when you grill a large zucchini, look for one that’s about 12 to 18 inches long.
 
That size gives you good slices without overwhelming seed development.
 

2. Prep the Zucchini Properly

 
Before you grill a large zucchini, wash it and trim both ends.
 
You don’t have to peel it unless the skin is exceptionally thick.
 
Most of the time, the skin on a large zucchini is still perfectly edible and helps hold the slices together.
 
Now, cut the zucchini lengthwise into planks that are about ½ inch thick.
 
If you’re wondering how to grill a large zucchini without it falling apart, lengthwise planks are the answer.
 
They’re sturdy, easy to flip, and give you more surface area for those gorgeous grill marks.
 
If the zucchini is very seedy, you can scoop out the large seeds with a spoon before slicing.
 

3. Salt to Draw Out Moisture

 
One of the biggest challenges when you grill a large zucchini is excess water.
 
Water creates steam, and steam prevents browning.
 
So to grill a large zucchini that actually gets charred instead of soggy, sprinkle salt on both sides of your planks.
 
Let them sit on a paper towel for about 15 to 20 minutes.
 
You’ll see beads of water form on the surface.
 
Pat them dry thoroughly before you grill a large zucchini.
 
This step is non-negotiable if you want great texture.
 

4. Season with Oil and Spices

 
Once your zucchini planks are dry, brush them with a generous amount of olive oil.
 
Oil helps prevent sticking and encourages browning when you grill a large zucchini.
 
Then season with salt, pepper, garlic powder, or your favorite dried herbs.
 
Smoked paprika is a wonderful choice because it enhances that grilled flavor.
 
You can also add a squeeze of lemon juice after grilling, but skip it before cooking as the acid can make the zucchini tough.
 

5. Preheat the Grill and Manage Heat

 
To grill a large zucchini successfully, your grill needs to be hot.
 
Preheat it to medium-high heat—around 400°F to 450°F.
 
Clean the grates and oil them lightly to prevent sticking.
 
If you’re using a gas grill, that’s straightforward.
 
For a charcoal grill, wait until the coals are covered in gray ash and you can hold your hand above the grate for only 3 to 4 seconds.
 
When you grill a large zucchini, a hot grate is what gives you those beautiful sear marks.
 

6. Grill the Zucchini Planks

 
Place your seasoned planks directly on the hot grill.
 
Close the lid and let them cook for about 4 to 5 minutes.
 
Then flip them carefully with tongs.
 
You want to grill a large zucchini until it’s tender but not falling apart.
 
Another 3 to 4 minutes on the second side should do it.
 
The total time depends on the thickness of your planks and the heat of your grill.
 
You’ll know they’re done when you can pierce the flesh easily with a knife and the surface is nicely charred.
 

7. Avoid Common Mistakes

 
If you want to grill a large zucchini like a pro, avoid these pitfalls.
 
Don’t cut the slices too thin, or they’ll fall apart on the grates.
 
Don’t skip the salting step, or you’ll end up with steamed zucchini instead of grilled.
 
Don’t walk away from the grill—zucchini can go from perfect to burnt quickly.
 
And don’t overcrowd the grill, because that lowers the temperature and steams the zucchini.
 

Delicious Ways to Serve Grilled Large Zucchini

 
Now that you know how to grill a large zucchini, let’s talk about serving it.
 

1. As a Simple Side Dish

 
Drizzle your grilled zucchini with a little good olive oil and a sprinkle of flaky sea salt.
 
Add a squeeze of fresh lemon and some chopped fresh herbs like basil or parsley.
 
This is the purest way to enjoy how to grill a large zucchini.
 

2. In Salads and Grain Bowls

 
Chop your grilled zucchini planks into bite-sized pieces.
 
Toss them into a quinoa bowl, a pasta salad, or a bed of greens.
 
The smoky flavor adds depth to any cold dish.
 

3. On Sandwiches and Wraps

 
Layer grilled zucchini slices into a veggie sandwich with hummus, roasted red peppers, and arugula.
 
It’s a fantastic way to use up a large zucchini from the garden.
 

4. As a Dip or Spread

 
Chop grilled zucchini and blend it with Greek yogurt, garlic, and lemon for a smoky dip.
 
It’s a unique twist that showcases how to grill a large zucchini beyond the usual side dish.
 

So, How to Grill a Large Zucchini?

 
To grill a large zucchini, slice it into thick planks, salt it to remove excess moisture, brush with oil, and cook over medium-high heat until charred and tender.
 
The key is proper prep and a hot grill.
 
Now that you know how to grill a large zucchini, you can turn even the biggest garden squash into a smoky, delicious meal.
 
So fire up the grill and enjoy your bounty.