Name: Keto Oven Roasted Vegetables Recipe
Prep time: 10 min
Cook time: 30 min
Total time: 40 min
Ingredients: 2 cups Broccoli ((cut into florets; ~1 small crown)); 2 cups Cauliflower ((cut into florets; ~1/2 head)); 2 cups Zucchini ((sliced into 1/4 inch thick circles; ~8 ounces)); 2 cups Bell peppers ((cut into 1.5 inch pieces; ~1.5 large peppers)); 2 cups Red onion ((cut into 1.5 inch pieces; ~1 medium onion)); 1/4 cup Olive oil; 2 tbsp Balsamic vinegar; 1 tsp Garlic powder; 1 tsp Italian seasoning; 1 tsp Sea salt; 1/2 tsp Black pepper

Free Printable: Low Carb & Keto Food List

Get It Now

This post may contain affiliate links, which help keep this content free. (Full disclosure)

Table Of Contents show

This oven roasted vegetables recipe with balsamic vinegar is such as staple in our house, and so simple that I almost forgot to share it. If you follow along with me here on Wholesome Yum, you know that I’m a big believer that simple is best… and that everyone needs easy vegetable recipes in their arsenal. So today, I’m sharing my favorite method ever for how to roast vegetables. Not only are they absolutely delicious, but they are also easy as can be. And, this technique works for any kind of vegetables you like! I’ll show you how to make keto roasted vegetables, the best vegetables to roast, and all of my tips for the best balsamic roasted vegetables.

This oven roasted vegetables recipe will get you and your family eating more veggies. Yay for that! And, part of the reason that balsamic roasted veggies are so popular is because they are SO easy!

If you like easy veggie recipes where you can use whatever you have on hand, you’ll want to keep stir fry vegetables and homemade vegetable soup on rotation as well.

How To Make Roasted Vegetables

Once you know how to roast vegetables, you’ll make them all the time.

Let me show you how to roast veggies, and I’ll share my best tips along the way, so that your keto roasted vegetables turn out perfect each and every time.

Preheat the oven. This step is obvious, but worth pointing out because it’s important! The key to the best oven roasted vegetables? A hot, hot oven!
Mix up the balsamic oil. Whisk together the olive oil, balsamic vinegar, garlic powder, Italian seasoning, sea salt, and black pepper.

Chop your veggies and toss them with balsamic oil. Drizzle the balsamic oil over the vegetables and toss to coat evenly.

TIP #1: It’s important to cut your vegetables into uniform-sized pieces, so that they cook evenly.

TIP #2: If you have any veggies that usually have a longer cook time than others you’re pairing them with, cut those into smaller pieces so that they cook faster. In this case, I picked veggies that all cook at a similar rate, so I cut them into pieces of about the same size.

Arrange vegetables in pan. Place the vegetables in a single layer on the prepared baking sheet.

TIP #3: Do not overcrowd the pan! This is an important step to the best baked vegetables. Make sure each vegetable piece is touching the pan.

TIP #4: Use either a foil lined pan, or if you don’t like using foil, just a greased baking sheet. I don’t recommend parchment paper, which tends to get soggy and produces less browned roasted vegetables.

Roast the vegetables. They are done when they have shrunk and turn brown. The browning is what makes them taste so good. Want to see your family devour a pan of veggies? Put these balsamic vegetables in front of them.

Best Vegetables To Roast

Deciding the best vegetables to roast doesn’t have to be complicated! My favorite low carb vegetables to roast include broccoli, cauliflower, zucchini, eggplant, bell peppers, onions, tomatoes, cabbage, asparagus, mushrooms, Brussels sprouts, celery root, and radishes.

I have a detailed bulleted list for you below, so you’ll know exactly how long to roast vegetables of all kinds.

Also, check my guide on keto vegetables (and the full keto food list) for a full line-up of veggies you can eat on a low carb diet. You can roast most of them!

Which Keto Roasted Vegetables To Make Together?

Choosing the best vegetables to roast is important, but it’s just as important to choose ones that will go well together. Don’t just pick a bunch and hope for the best!

The key to roasting mixed vegetables is to choose ones that cook at a similar speed.

How do you know that? The primary factors are the hardness of the vegetables and the water content. In particular, root vegetables take longer to roast than others, but most of these are higher in carbs as well.

My oven roasted vegetables recipe combines veggies that take about the same amount of time to cook, so they work perfectly together.

How Long To Roast Vegetables In The Oven?

The keto oven roasted vegetables I picked for this recipe – broccoli, cauliflower, zucchini, bell peppers, and red onions – will take about 30 minutes in the oven.

Here is a guide for approximately how long to roast vegetables at 400 degrees or 425 degrees (the times are pretty similar):

Asparagus – 12-20 minutes. Notice asparagus takes less time than most veggies, so often is better on its own. Here’s a basic roasted asparagus recipe.
Bell peppers – 20-35 minutes. You can roast peppers until they are just crisp tender, or for longer to make them soft and sweet.
Bok choy – 15-20 minutes. Try garlic roasted bok choy like this.
Broccoli – 25-30 minutes. It’s a must for my balsamic roasted veggies recipe, or you can pair it with cauliflower for parmesan broccoli and cauliflower.
Brussels sprouts – 30-45 minutes. The time will vary widely depending on the size of your sprouts. Here’s an easy roasted Brussels sprouts recipe.
Butternut squash – 40-45 minutes for cubes. This is a bit higher in carbs so not suitable on its own for keto, but fine for low carb. Here’s a garlic roasted butternut squash recipe.
Cabbage – 30-35 minutes. Cabbage takes longer to roast, but it’s worth the wait to get the edges caramelized. My favorite way to make it is cabbage steaks.
Cauliflower – 25-30 minutes for florets. You can also make whole roasted cauliflower or garlic roasted cauliflower.
Celery root, rutabagas & jicama – 35-45 minutes. These are all great potato replacements for keto French fries.
Cherry tomatoes – 15-25 minutes. This will vary a bit depending on their size, but the good news is it’s tough to overcook them.
Eggplant – 30-35 minutes. Here’s how to roast eggplant slices.
Green beans – 20-25 minutes. Or, try garlic parmesan roasted green beans.
Mushrooms – 25-30 minutes. You can throw them in with the recipe below, or make balsamic roasted mushrooms separately.
Radishes – 30-40 minutes. Try this crispy roasted radishes recipe!
Red or white onion – 25-35 minutes. Most people wouldn’t roast onions on their own, but they pair well with other veggies. I love including them with my balsamic vegetables!
Zucchini – 15-30 minutes. Zucchini has a wide range depending on how soft you want it and the size. You can roast it for a longer time like you do in this balsamic roasted vegetables recipe (below), or pair it with quick-roasting veggies, such as in these salmon foil packets.

These are estimates based on veggies cut into large pieces, as shown above. Larger pieces will take longer, and smaller pieces will be less time.

TIP: You can combine ones that have a similar cook time, OR cut the ones that have a longer cook time into smaller pieces.

Are Roasted Vegetables Keto?

Yes, oven roasted vegetables are keto diet approved, as long as you use low carb vegetables. Many roasted vegetables recipes feature lots of root vegetables, which are often times a little too high in carbohydrates to be keto.

This low carb roasted vegetables recipe utilizes the best vegetables to roast… all keto and low carb options!

It has just 8 grams net carbs for generous 1-cup serving.

But you don’t have to be keto to enjoy these simple roasted veggies. Everyone will love them!

Can You Make Balsamic Roasted Vegetables Ahead?

Yes, you can make these keto friendly roasted vegetables ahead of time. Keto roasted veggies are just as delicious when they are re-heated, so roast them up and eat them throughout the week.

I love them warm, but they are also delicious served up cold or at room temperature. Try them on a cold roast vegetable salad for a veggie-filled meal, or just serve them up with your favorite protein for an easy lunch or dinner.

What To Serve With Oven Roasted Vegetables

Once you know how to roast vegetables, you just need to decide what to serve them with! There are so many great protein options – chicken, beef, seafood… these roasted vegetables with balsamic vinegar pair with just about anything. Here are some of my favorite keto low carb dinner recipes:

Air Fryer Chicken Wings – You can make these at the same time, while the veggies are cooking.
Baked Coconut Shrimp – Learn how to roast vegetables, then throw some coconut shrimp in the oven to serve with them.
Oven Baked Chicken Thighs – Doesn’t get any simpler than chicken and vegetables, right?
Lamb Kofta – These skewers need a veggie side and this oven roasted vegetables recipe is a great option.
Sirloin Steak – Balsamic roasted vegetables pair perfectly with this balsamic steak marinade!

Tools To Make Keto Roasted Vegetables

Tap the links below to see the items used to make this recipe.

Glass Bowls – A large glass bowl makes tossing together the balsamic roasted vegetables easy! This is a set with every size bowl you’ll need.
Nonstick Baking Sheet Pan – You’ll want the largest baking sheet for this easy oven roasted vegetables recipe.
Glass Storage Containers – Perfect for saving leftovers, or for meal prepping this oven roasted vegetables recipe.

Keto Oven Roasted Vegetables Recipe

Pin It For Later!

Leave a Review or Question Cancel reply

25 Comments

Rita Grandy
0 March 8, 2023Reply

Can leftovers be frozen?
- Wholesome Yum D
  0 March 9, 2023Reply
  
  Hi Rita, Yes, they can be frozen.
Llama
0 April 10, 2022Reply

Can you use frozen vegetables????
- Wholesome Yum D
  0 April 11, 2022Reply
  
  Hi Llama, You could use frozen vegetables, but they tend to be more mushy compared to fresh.
Anita K Stern
0 November 30, 2021Reply

This recipe was so easy and DELICIOUS!!!!!!!!! It was a big hit with my family!!!
Francy Moll
0 September 24, 2021Reply

This was so good. I used broccoli, cauliflower, red onions and red and yellow peppers. I was tired of plain vegetables and this didn’t disappoint. Definitely a keeper.
Tammie Giles
0 July 31, 2021Reply

LOVE this simple, delicious and nutritious recipe! I’ve made it several times and used different veggies each time, and they’re ALL delicious! I’ve also made it for my neighbor, who marveled at the fact that even her vegetable-hating husband and kids gobbled it up.
Colin
0 April 23, 2021Reply

Very easy and tasty recipe. Thank you very much.
Stefanie H
0 March 21, 2021Reply

This was so delicious! Even my husband, who does not like vegetables, thought it tasted excellent! I’ve tried other recipes with balsamic vinegar for roasted vegetables, but they did not taste good. This is a keeper!
Andrea Woody
0 November 12, 2020Reply

My family loves this side dish! It is so flavorful!
Kotie Erwee
0 August 7, 2020Reply

The information seems well researched and well put together for someone like me (with little cooking experience) to understand.
Tan
0 November 25, 2019Reply

Wonderful
Sarah
0 November 20, 2019Reply

These veggies are so delicious and so simple!! I’m always looking for new seasonings and combinations. Perfect for the holidays!
Nicole Dawson
0 November 20, 2019Reply

We love roasted veggies! A staple in our house and now you made it extra easy for others to enjoy it as well.
Shadi Hasanzadenemati
0 November 19, 2019Reply

I’m making this for the weekend, I bet everyone is going to devour it!
- Marci
  0 October 24, 2021Reply
  
  Could I cook chicken pieces on the sheet pan to make this a one dish meal?
  - Wholesome Yum D
    0 October 25, 2021Reply
    
    Hi Marci, I suggest using my Roasted Chicken and Vegetables in the Oven recipe to make sure the chicken is cooked all the way through.
Allison
0 November 19, 2019Reply

Easy, healthy and delicious. We’ll be making these again and again.
Alisa Fleming
0 November 19, 2019Reply

Roasted vegetables are something I could eat everyday! I think I need to make this mix soon, but might sub Brussels sprouts for the zucchini.
Kortney
0 November 19, 2019Reply

This is so great breaking down how each veggie roasts at different times. Perfect for planning out what you want to roast together.
Anita
0 November 18, 2019Reply

This is a super easy and really delicious way to roast vegetables. It was my first time adding balsamic vinegar, but am definitely loving it. 🙂
Erika
0 November 18, 2019Reply

I love roasting vegetables. They are such a healthy, filling side dish!
Megan Ellam
0 November 18, 2019Reply

I love roasting vegetables as it makes them so much more flavoursome. This is such a great mix with the Italian seasoning too. Thanks for another awesome recipe Maya.
Sara
0 November 18, 2019Reply

I just loved these so much. SO much flavor than normal roasted vegetables.
Krissy Allori
0 November 18, 2019Reply

These roasted vegetables are so good. I loved the burst of all the flavors was amazing.