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You can grill yellow squash for about 4 to 6 minutes per side over medium-high heat.
That said, the answer to how long do you grill yellow squash depends on a few things like the thickness of your slices, the heat of your grill, and whether you’re cooking halves or rounds.
If you’ve been wondering how long do you grill yellow squash without turning it into mush, you’re in the right place.
In this post, we’ll break down exactly how long to grill yellow squash, the best ways to prep it, and a few tips so yours comes out perfectly tender every single time.
Let’s get grilling.
How Long Do You Grill Yellow Squash?
When you ask how long do you grill yellow squash, the honest answer is that it depends on how you cut it.
Here’s a simple breakdown to guide you.
1. Sliced Rounds or Spears
If you slice yellow squash into rounds or spears about a quarter-inch thick, grill them for 4 to 6 minutes per side.
That gives you a total grill time of roughly 8 to 12 minutes.
This is the most common way people grill yellow squash and it’s the timing most recipes call for.
2. Halved Lengthwise
When you halve yellow squash lengthwise, the flesh is thicker, so it needs a bit more time.
Grill halved yellow squash for 5 to 7 minutes per side, so about 10 to 14 minutes total.
You’ll know it’s done when the flesh is tender and you can pierce it easily with a fork.
3. Whole Yellow Squash
Grilling whole yellow squash takes the longest, around 20 to 25 minutes total.
You’ll want to turn it every 5 minutes or so to make sure it cooks evenly on all sides.
Whole squash is great when you want that smoky, roasted flavor without any prep work.
4. Thin Slices or Plancha-Style
If you cut yellow squash into very thin slices, think a quarter-inch or less, they’ll cook in just 2 to 3 minutes per side.
These are perfect for stacking on burgers, tacos, or grain bowls.
Just keep an eye on them because thin slices can go from perfectly charred to burnt fast.
How to Prep Yellow Squash for Grilling
How long do you grill yellow squash also depends on how you prep it before it hits the grates.
A little prep goes a long way.
1. Slice Evenly
Even slices cook at the same rate, which means no soggy pieces next to burnt ones.
Aim for consistent thickness, whether you’re doing rounds, spears, or halves.
This alone makes a huge difference in how long do you grill yellow squash.
2. Brush With Oil
Coat your yellow squash slices with a light layer of olive oil before grilling.
This keeps them from sticking to the grates and helps them pick up those beautiful grill marks.
3. Season Simply
Salt, pepper, and a little garlic powder are really all you need.
Yellow squash has a mild, slightly sweet flavor that shines when you don’t overwhelm it with heavy seasonings.
4. Preheat Your Grill
Get your grill nice and hot before the squash goes on, around medium-high heat or 400°F to 450°F.
A hot grill sears the outside quickly, which is key to getting tender squash instead of a mushy mess.
5. Oil the Grates Too
Even with oiled squash, a quick brush of oil on the grates themselves helps prevent sticking.
It’s a small step that saves you from losing half your squash to the grill.
Tips for Perfectly Grilled Yellow Squash
Beyond timing, a few simple habits will make your grilled yellow squash turn out great every time.
1. Don’t Walk Away
Yellow squash grills fast, especially thin slices.
Stay close and check it often so you don’t miss that sweet spot between charred and burnt.
2. Flip Only Once
Resist the urge to keep flipping your squash.
One flip halfway through gives you nice grill marks and even cooking without drying it out.
3. Use a Grill Basket for Small Pieces
If you’re grilling diced or thin slices of yellow squash, a grill basket keeps them from falling through the grates.
It also makes tossing and turning them a breeze.
4. Watch for Doneness, Not Just Time
Timing is a guide, but your eyes and a fork are the real test.
Yellow squash is ready when it’s tender, slightly translucent, and easy to pierce.
If it’s still firm in the middle, give it another minute or two.
5. Serve Right Away
Grilled yellow squash is best enjoyed hot off the grill.
It loses that lovely texture if it sits too long, so plate it up as soon as it’s done.
A squeeze of lemon or a sprinkle of parmesan never hurts either.
So, How Long Do You Grill Yellow Squash?
You grill yellow squash for about 4 to 6 minutes per side for slices, 5 to 7 minutes per side for halves, and 20 to 25 minutes for whole squash.
The exact time comes down to thickness and heat, so use those numbers as your starting point and adjust from there.
Now that you know how long do you grill yellow squash, fire up the grill and enjoy this easy, healthy side dish anytime.