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How long to cook zucchini and squash in the oven depends on how you cut them and what temperature you use, but most pieces are perfectly tender in 15 to 25 minutes at 400°F (204°C).
If you’ve been wondering how long to cook zucchini and squash in the oven so they come out tender instead of soggy, you’re in the right place.
Roasting zucchini and squash in the oven is one of the easiest ways to turn summer produce into a caramelized side dish.
In this post, we’ll cover exactly how long to cook zucchini and squash in the oven, plus the prep tricks that keep them from turning to mush.
Let’s get roasting.
How Long to Cook Zucchini and Squash in the Oven
As a general rule, zucchini and squash take about 15 to 25 minutes in a 400°F oven.
But the exact time depends on a few things you can control.
1. Thickness of Your Cuts
The thicker the slices, the longer they need to cook.
Half-inch rounds usually take 18 to 20 minutes, while quarter-inch coins finish in about 12 to 15 minutes.
If you cut them into spears or wedges, plan on the full 25 minutes.
2. Oven Temperature
Most recipes for zucchini and squash in the oven call for 400°F.
That heat is hot enough to caramelize the edges without steaming the insides.
If you drop to 375°F, add about 5 extra minutes, and if you crank it to 425°F, check them at 15 minutes.
3. Type of Squash
Zucchini and yellow squash have a high water content, so they cook fast.
Butternut and acorn squash are denser, so they need 35 to 45 minutes when cubed.
So when you cook zucchini and squash together in the oven, stick to the same family for even results.
How to Roast Zucchini and Squash in the Oven Perfectly
Nailing the timing is only half the battle.
How you prep zucchini and squash before they go in the oven matters just as much.
1. Cut Them Evenly
Uneven pieces mean uneven cooking.
Aim for slices that are all the same thickness so every bite finishes at the same time.
This alone fixes most timing headaches when you cook zucchini and squash in the oven.
2. Pat Them Dry
Excess moisture is the enemy of roasting.
Blot the slices with a clean towel before seasoning so they roast instead of steam.
Dry surfaces brown faster, which means your zucchini and squash in the oven develop those golden edges you want.
3. Don’t Crowd the Pan
Spread the pieces in a single layer with a little space between them.
If they overlap, they trap steam and turn soft and limp.
Use two sheet pans if you have to, because crowded squash never roasts well.
4. Toss With Oil and Seasoning
A couple tablespoons of olive oil helps the edges crisp and keeps the slices from sticking.
Salt, pepper, garlic powder, and Italian herbs are a classic combo.
Add everything to a bowl and toss until each piece is lightly coated.
5. Flip Halfway Through
About 10 minutes in, flip the slices with a spatula.
This helps both sides brown evenly and prevents burning on the bottom.
Then finish cooking zucchini and squash in the oven until they’re fork-tender.
Signs Your Zucchini and Squash Are Done
So how do you know when zucchini and squash in the oven are ready?
1. Fork-Tender Texture
A fork should slide in easily with just a bit of resistance.
If it goes in like butter, you’ve overcooked them, and if it fights back, they need more time.
2. Golden Edges
Look for browned, slightly crispy edges.
That caramelization is where the flavor lives, and it’s the clearest sign your squash is roasted, not steamed.
3. No Pooling Liquid
Done squash releases very little liquid on the pan.
If you see puddles, they need a few more minutes so the moisture can cook off.
Quick Tips for Cooking Zucchini and Squash in the Oven
A few small tweaks make a big difference.
Sprinkle on some grated parmesan during the last 5 minutes for a savory crust.
Keep the oven door closed as much as possible so the temperature stays steady.
And if you’re short on time, thinner slices are your best friend, since they cut the cooking time nearly in half.
One more thing, and it’s important.
Salting raw slices and letting them sit for 15 minutes draws out extra water, so they roast up crisp instead of soggy.
Just pat them dry before they hit the pan.
Leftovers keep in the fridge for up to 4 days and reheat nicely in a skillet.
So, How Long to Cook Zucchini and Squash in the Oven?
How long to cook zucchini and squash in the oven comes down to roughly 15 to 25 minutes at 400°F, depending on how thick you slice them.
Cut them evenly, pat them dry, give them space on the pan, and flip halfway through.
Do that, and you’ll get tender, caramelized zucchini and squash in the oven every single time.
Now fire up that oven and enjoy.