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You can cook spaghetti squash on the grill in about 40 to 60 minutes, depending on the size of the squash and the temperature of your grill.
This is one of those cooking methods that sounds fancy but is actually ridiculously easy.
If you’ve been wondering how long do you cook spaghetti squash on the grill, the short answer is until the flesh is tender and shreds easily with a fork.
In this post, we’ll break down exactly how long to cook spaghetti squash on the grill, how to prep it, and a few tips so yours comes out perfect every single time.
Let’s get grilling.
How Long Do You Cook Spaghetti Squash on the Grill?
When you cook spaghetti squash on the grill, timing depends on a few things like size, heat level, and whether you cut it in half or leave it whole.
As a general rule, a medium spaghetti squash cut in half and grilled over medium heat (around 350–400°F) takes about 40 to 50 minutes.
A larger squash can take closer to 60 minutes, while a small one might be done in 30 to 35 minutes.
If you grill spaghetti squash whole, expect it to take longer, usually around 60 to 75 minutes, since the heat has to penetrate the thick skin.
The best way to know when your spaghetti squash is done is to poke the flesh with a fork.
If the fork slides in easily and the inside shreds into spaghetti-like strands, it’s ready.
1. Grill Temperature Matters
The temperature of your grill plays a huge role in how long you cook spaghetti squash on the grill.
Medium heat, around 350 to 400°F, is the sweet spot for grilling spaghetti squash.
If your grill is too hot, the outside will char before the inside is tender.
If it’s too low, the squash will take forever and might dry out.
So keep an eye on your grill’s thermometer and adjust as needed.
2. Size of the Squash Changes Everything
A small spaghetti squash cooks faster than a large one, so size really does matter here.
If you’re grilling a big spaghetti squash, cut it into halves or even quarters to speed things up.
Smaller pieces mean more surface area exposed to the heat, which means you cook spaghetti squash on the grill in less time.
Aim for uniform thickness so every piece finishes at the same time.
3. Cut Side Down or Up?
Here’s a little secret about grilling spaghetti squash: start with the cut side down.
This gives you those gorgeous grill marks and helps the flesh caramelize slightly.
After about 20 to 25 minutes, flip it over so the cut side faces up.
This lets the squash finish cooking through without burning.
When you cook spaghetti squash on the grill this way, you get the best of both worlds: char and tenderness.
How to Prep Spaghetti Squash for the Grill
Prepping spaghetti squash for the grill is simple, but a few steps make a big difference.
First, wash the outside and dry it well.
Then carefully cut the squash in half lengthwise using a sharp chef’s knife.
Scoop out the seeds and the stringy pulp in the middle, just like you would with a pumpkin.
Drizzle the flesh with olive oil and season with salt and pepper.
That’s it.
Some people brush on a little garlic butter or sprinkle on herbs like rosemary or thyme, which adds amazing flavor when you cook spaghetti squash on the grill.
1. Should You Oil the Grill Grates?
Yes, you should oil your grill grates before placing the squash on them.
This prevents sticking and makes flipping easier.
Use a paper towel dipped in oil and rub it over the grates with tongs while the grill is hot.
A clean, well-oiled grate is key when you cook spaghetti squash on the grill.
2. Indirect Heat vs. Direct Heat
For even cooking, use a mix of direct and indirect heat.
Start the squash cut side down over direct heat for those grill marks.
Then move it to indirect heat to finish cooking through without burning.
This two-zone method is the pro move when you cook spaghetti squash on the grill.
3. Cover the Grill
Keep the lid closed as much as possible while grilling spaghetti squash.
Closing the lid traps heat and helps the squash cook evenly, like a little oven.
Every time you open the lid, you lose heat and add time.
So resist the urge to peek and let the grill do its job.
Tips for Perfectly Grilled Spaghetti Squash
Want to nail this every time?
Here are a few tips that make a big difference when you cook spaghetti squash on the grill.
1. Don’t Overcook It
Overcooked spaghetti squash turns mushy and loses that lovely al dente texture.
Start checking around the 35 to 40 minute mark.
When the flesh shreds easily but still holds its shape, pull it off the grill.
2. Let It Rest Before Shredding
Once you remove the squash from the grill, let it rest for about 5 to 10 minutes.
This allows the steam to finish cooking the inside gently.
Then take a fork and scrape the flesh into strands.
It should shred like magic, giving you those spaghetti-like noodles.
3. Add Flavor After Grilling
Grilled spaghetti squash has a slightly smoky, nutty flavor that’s delicious on its own.
But you can take it up a notch with a drizzle of olive oil, a sprinkle of parmesan, or a spoonful of pesto.
Toss it with marinara, garlic, and fresh basil for a healthy pasta alternative.
The options are endless once you know how long do you cook spaghetti squash on the grill.
So, How Long Do You Cook Spaghetti Squash on the Grill?
You cook spaghetti squash on the grill for about 40 to 60 minutes at medium heat, depending on the size and whether it’s cut in half.
Cut it, oil it, season it, and let the grill do the heavy lifting.
With a little patience and a good fork test, you’ll have tender, shreddable strands every time.
Now you know exactly how long do you cook spaghetti squash on the grill, so fire up those grates and enjoy.