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You grill summer squash by slicing it, seasoning it, and cooking it over direct heat until it’s tender with nice char marks.
It’s one of the easiest and most rewarding vegetables to throw on the grill, and once you know how to grill summer squash, you’ll be making it all season long.
The best part is that summer squash like zucchini and yellow squash cook fast, soak up marinades beautifully, and pair with just about any summer meal.
If you’ve been wondering how to grill summer squash without it turning mushy or sticking to the grates, this guide will walk you through every step.
In this post, we’ll cover how to grill summer squash, the best prep methods, cooking times, flavor ideas, and tips for getting perfect results every time.
Let’s fire up the grill.
How Do You Grill Summer Squash?
You grill summer squash by prepping it properly, heating your grill, and cooking it over medium-high heat for a few minutes per side.
Here’s how the whole process breaks down so you can grill summer squash like a pro.
1. Choose Firm, Fresh Summer Squash
The best summer squash for grilling is firm, heavy for its size, and free of soft spots.
Zucchini and yellow squash are the most common types, but pattypan and crookneck work great too.
Smaller squash, about 6 to 8 inches long, tend to have fewer seeds and a firmer texture that holds up well on the grill.
2. Slice It the Right Way
How you cut your summer squash matters when you grill it.
For zucchini and yellow squash, slice them lengthwise into planks about 1/4 to 1/2 inch thick.
Lengthwise slices are easier to flip and less likely to fall through the grates than rounds.
If your squash is large, cut it in half lengthwise first, then slice.
3. Season and Oil Generously
Before you grill summer squash, brush each slice with olive oil on both sides.
Oil keeps the squash from sticking and helps seasonings cling to the surface.
Then sprinkle with salt, pepper, garlic powder, or any seasoning blend you love.
You can also marinate your summer squash for 15 to 30 minutes before grilling for deeper flavor.
4. Preheat the Grill and Clean the Grates
A hot, clean grill is key when you grill summer squash.
Heat your grill to medium-high, around 400°F to 450°F.
Scrape the grates and wipe them with an oiled paper towel to create a non-stick surface.
5. Grill for a Few Minutes Per Side
Place your summer squash slices directly on the grates and close the lid.
Grill for 3 to 4 minutes, then flip and grill another 3 to 4 minutes.
You’ll know your grilled summer squash is done when it’s tender with light char marks and a slight give when pressed.
Tips for Perfectly Grilled Summer Squash
These tips will help you grill summer squash that’s tender, flavorful, and never soggy.
1. Don’t Overcook It
Summer squash cooks fast, and overcooking turns it into mush.
Pull it off the grill while it still has a bit of bite.
2. Use a Grill Basket for Smaller Pieces
If you want to grill summer squash in rounds or chunks, use a grill basket.
It keeps the pieces from falling through the grates while still giving you that smoky grilled flavor.
3. Add a Finish of Fresh Herbs or Lemon
Once your summer squash comes off the grill, squeeze fresh lemon juice over it and sprinkle with chopped basil, parsley, or mint.
It brightens up the flavor and makes your grilled summer squash taste restaurant-worthy.
4. Watch Out for High Sugar Marinades
Marinades with honey, brown sugar, or sugary sauces burn quickly on the grill.
If you use one, brush it on during the last minute of cooking instead of before.
Flavor Ideas for Grilled Summer Squash
You can grill summer squash with just about any flavor profile you’re in the mood for.
Try tossing it in Italian dressing, balsamic vinaigrette, or a mix of olive oil, garlic, and red pepper flakes.
For a Mediterranean twist, top your grilled summer squash with feta, olives, and oregano.
A little smoked paprika and lime also works wonders if you want a smoky, zesty kick.
So, How Do You Grill Summer Squash?
You grill summer squash by slicing it into planks, oiling and seasoning it, and cooking it over medium-high heat for 3 to 4 minutes per side.
It’s simple, fast, and one of the best ways to enjoy your summer harvest.
Whether you serve it as a side dish, toss it into pasta, or pile it on a burger, grilled summer squash brings smoky flavor and tender texture to any meal.
Now that you know how to grill summer squash, grab a few from your garden or the farmers market and get cooking.