Roasted Summer Squash and Zucchini

An easy summer side, this roasted summer squash and zucchini recipe is healthy, easy and so flavorful. Vegan and gluten-free.

Summer squash and zucchini scream summer to me. My mom used to sauté them both in butter with onions at least once a week during the summer months and to this day I still love the combo.

So when Isaac brought home a huge box of summer squash, zucchini, and tomatoes from his parent’s garden last night, I knew exactly what I wanted to make! I decided I would try my hand at a similar preparation to the sautéed veggies my mom used to make – but with a healthy twist – and roasting the squash instead of sautéing it.

Bowl of roasted summer squash, zucchini, and red onion with pepper and seasoning. A wooden spoon is beside the bowl.

It worked out perfectly and the squash and zucchini came out warm, a little charred, caramelized and amazing. I’m pretty sure I could eat a whole sheet pan of roasted zucchini and squash in one sitting (no surprise there as that happens with almost all roasted veggies around here!).

How to Roast Summer Squash and Zucchini

Start by prepping and chopping the veggies. Try to keep them similar in size so they cook in the same amount of time – smaller pieces cook quicker and larger pieces take longer to cook. Place the chopped squash, zucchini, onion and garlic in a large bowl and drizzle with oil. Stir until all of the veggies are well coated and then sprinkle with salt and pepper.

Spread the mixture out on a large rimmed baking sheet and roast at 425ºF for 30 minutes. Stir once halfway through cooking and that’s it… your zucchini and squash should be golden and tender, but still a little crisp.

Roasted, chopped summer squash, zucchini, and red onion on a sheet with spices and pepper sprinkled on them.

What to Serve With Roasted Summer Squash and Zucchini

This is the perfect side dish to serve with a protein of your choice, as it’s pretty versatile and pairs well with almost anything. It’s also great in salads and wraps – I purposefully saved some from last night’s batch so that I can use it salads this week for lunch.

Bowl of roasted summer squash, zucchini, and red onion with pepper and seasoning. A wooden spoon is beside the bowl.

Roasted Squash and Zucchini Pairs Well With:

If you make this roasted summer squash and zucchini, please be sure to leave a comment and star rating below. Your feedback is super helpful for the EBF team and other readers who are thinking about making the recipe. 

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Roasted, chopped summer squash, zucchini, and red onion on a sheet with spices and pepper sprinkled on them.

Roasted Summer Squash and Zucchini

  • Author: Brittany Mullins
  • Prep Time: 10 minutes
  • Cook Time: 30 minutes
  • Total Time: 40 minutes
  • Yield: 3


Roasted summer squash and zucchini with onion, garlic makes for an easy summer side dish that you can pair with just about any protein. 


  • 2 small/medium yellow summer squash, chopped into 1/2 inch pieces
  • 2 small/medium zucchini, chopped into 1/2 inch pieces
  • 1/2 cup red onion, roughly chopped
  • 1 Tablespoon olive or avocado oil
  • 2 cloves garlic, minced
  • sea salt and pepper to taste


  1. Preheat oven to 425°F.
  2. Place squash, zucchini, onion, garlic and oil in a large bowl. Toss until the veggies are coated. Liberally sprinkle on salt and pepper and toss once more.
  3. Spread mixture out on a large rimmed baking sheet and roast for 30 minutes, tossing once around the 15 minute mark. Remove from oven and serve warm with protein of your choice.

  • Category: Sides
  • Method: Roast
  • Cuisine: American


  • Serving Size: 1/3 recipe
  • Calories: 88
  • Sugar: 6.5g
  • Fat: 5g
  • Carbohydrates: 9g
  • Fiber: 2.5g
  • Protein: 3g

Keywords: roasted summer squash, roasted zucchini

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    • Easy to make and very tasty, I didn’t have red onions so used sweet onions. Instead of chopped garlic used Lawry’s garlic salt with parsley, it was delicious poured over rice.

  1. Tried this a couple times now and loved it. Also added asparagus once and brussel sprouts another time. Winner every time. Thanks

  2. Why am I not able to “pin” your recipes to Pinterest? The option is there, but doesn’t work. Pinterest is where I organize all my recipes. I love what you offer, but not the paper clutter of printing recipes. Thx for getting back to me.

    • Hi Diana. You should definitely be able to pin my recipes. There is a pin it button on every recipe photo and there is also a pin it button in the recipe card, right next to the print option. When you click “pin recipe” the images to pin should pop up! Let me know if you need help troubleshooting. Another option is to check out my Pinterest page and pin the recipe from there!

  3. Brittany,
    I found your blog through TIU girls and have been LOVING all of your recipes and workouts!! Thanks so much for the inspiration to live a healthy Vegan/Vegetarian lifestyle and lose weight…12 month count down until my wedding!

  4. What a great mix of fitness routines! I like to do and try everything by alternating them as well~and lately I’ve been loving all the “crazy wild” type routines, as well as pilates and ballet inspired ones! It’s awesome 😀

  5. Looks great! And what a fun way to boost up your daily fiber intake just a smidge. Yum!

  6. WEll, I wanted to try something different with this recipe than just placing the roasted veggies over a grain or pasta.

    I did a Wrap, with wasabi mayo (vegan) and some spices…it was AWESOME!

    Thank you for the idea.

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