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You can grill zucchini and yellow squash easily, and they turn out tender, smoky, and absolutely delicious every single time.
If you’ve been wondering how to grill zucchini and yellow squash without them turning mushy or sticking to the grates, you’re in the right place.
Grilling zucchini and yellow squash is one of the fastest, healthiest ways to enjoy summer produce, whether you’re cooking on a gas grill, charcoal grill, or even a grill pan indoors.
The key is in the prep, the heat, and the timing, and once you nail those, you’ll be grilling zucchini and yellow squash like a pro all season long.
In this post, we’ll walk through how to grill zucchini and yellow squash step by step, plus tips for seasoning, avoiding sogginess, and getting those beautiful char marks.
Let’s fire up the grill.
How to Grill Zucchini and Yellow Squash
Grilling zucchini and yellow squash comes down to a few simple steps, and once you know them, you can repeat them every time.
Here’s exactly how to grill zucchini and yellow squash so they come out perfect.
1. Choose Firm, Fresh Squash
Start by picking zucchini and yellow squash that are firm, heavy for their size, and free of soft spots.
Small to medium squash work best for grilling because they have fewer seeds and hold their shape better on the grates.
If your squash feels spongy, it’ll turn mushy on the grill, so save those for baking instead.
2. Slice Them Evenly
For grilling zucchini and yellow squash, slice them into planks about 1/4 to 1/2 inch thick.
Cutting them lengthwise into long strips gives you more surface area for char marks and makes them easier to flip.
If you’re grilling zucchini and yellow squash rounds, keep them at least 1/2 inch thick so they don’t fall apart.
Even slices matter because thin pieces cook faster than thick ones, and you want everything to finish at the same time.
3. Salt Them First
This is the step most people skip, but it’s the secret to grilling zucchini and yellow squash without them turning soggy.
Sprinkle salt on the slices and let them sit for about 15 minutes.
The salt pulls out excess moisture, which is exactly what you want before they hit the hot grill.
After 15 minutes, pat them dry with paper towels or a clean kitchen towel.
4. Toss in Oil and Seasoning
Brush or toss your zucchini and yellow squash with a light coat of olive oil.
Oil helps them cook evenly, prevents sticking, and helps your seasonings cling to the surface.
For seasoning, simple is best: salt, black pepper, garlic powder, and maybe a pinch of smoked paprika.
You can also add dried herbs like oregano, thyme, or Italian seasoning for extra flavor.
5. Preheat the Grill to Medium-High
When grilling zucchini and yellow squash, you want a clean, hot grill.
Preheat your grill to medium-high heat, around 400°F to 450°F.
If you’re using a gas grill, let it heat up for at least 10 minutes with the lid closed.
For charcoal, wait until the coals are covered in gray ash and you can hold your hand above the grate for only 3 to 4 seconds.
6. Oil the Grates
Before placing anything on the grill, brush the grates with a little oil using tongs and a folded paper towel.
This step is crucial for grilling zucchini and yellow squash because they’re delicate and love to stick.
A clean, well-oiled grate means your squash lifts off easily without tearing.
7. Grill for 3 to 4 Minutes Per Side
Place your zucchini and yellow squash slices directly on the hot grates.
Grill them for about 3 to 4 minutes per side, flipping once with tongs or a spatula.
You’re looking for visible char marks and a slightly softened texture.
Don’t walk away, because grilling zucchini and yellow squash goes fast, and overcooking turns them limp.
Tips for Perfectly Grilled Zucchini and Yellow Squash
A few extra tricks will make grilling zucchini and yellow squash even better.
1. Use a Grill Basket for Small Pieces
If you cut your squash into rounds, chunks, or half-moons, use a grill basket.
This keeps small pieces of zucchini and yellow squash from falling through the grates while still giving them that smoky flavor.
2. Don’t Overcrowd the Grill
Give each slice of zucchini and yellow squash its own space on the grate.
Crowding steams the squash instead of grilling it, which means no char and a softer texture.
3. Add a Finishing Touch After Grilling
Once your zucchini and yellow squash come off the grill, finish them with a squeeze of fresh lemon juice.
A sprinkle of grated parmesan, crumbled feta, or fresh herbs like basil and parsley takes them to the next level.
A drizzle of balsamic glaze or a brush of garlic butter also works wonders.
Common Mistakes When Grilling Zucchini and Yellow Squash
Avoid these common pitfalls, and your grilled zucchini and yellow squash will always turn out great.
1. Skipping the Salt and Dry Step
Without salting and patting dry, your zucchini and yellow squash release water on the grill and steam instead of sear.
2. Using Too Little Oil
A dry surface means sticking, and sticking means torn squash.
A light but thorough coat of oil solves this for both zucchini and yellow squash every time.
3. Grilling on Low Heat
Low heat means longer cook time, and longer cook time means mushy squash.
Medium-high heat gives you quick char and a tender interior without turning your zucchini and yellow squash into mush.
So, How to Grill Zucchini and Yellow Squash?
Grilling zucchini and yellow squash is as simple as slicing, salting, oiling, and cooking them on a hot, well-oiled grill for a few minutes per side.
With firm squash, even slices, and a medium-high flame, you’ll get tender, smoky, perfectly charred results every time.
So grab your zucchini and yellow squash, fire up the grill, and enjoy one of summer’s easiest and tastiest side dishes.