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Home » Balsamic Roasted Tomatoes with Onions

Balsamic Roasted Tomatoes with Onions

July 17, 2014 by Debi 25 Comments

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A bit of roasting in the oven to make an amazing smelling and totally delicious Balsamic Roasted Tomatoes with Onions that can be used in so many dishes!

roasted tomatoes and onions on a piece of parchment paper on a baking stone with a fork in them.

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Balsamic Roasted Tomatoes with Onions https://lifecurrentsblog.com #oven #roasted sun-dried tomatoes #balsamic #onions #vegan #vegetarian

Roasted tomatoes

 Last year I had this amazing idea for a yummy and fun recipe.

I started the preparations to make it (there were several parts to it). First, I made some awesome roasted tomatoes.

Not just any ol’ roasted tomatoes though. These babies had balsamic vinegar and onions and they smelled amazing as they roasted.

Well, one day lead to another, and one week lead to another. And, I didn’t want those amazing roasted tomatoes to go bad, so I stuck them in the freezer.

I started to use them

Dinners and lunches had to be made. I started to use the roasted tomatoes. Anytime a recipe called for sun-dried tomatoes, I used some from my stashed frozen tomatoes.

Eventually, the stash dwindled. And, the original dish I intended to make could no longer be accomplished with what was left of the roasted tomatoes. (I still may make the recipe, so I’m keeping it a secret for now).

But, those simple roasted tomatoes were so good in everything they touched. They had just the right “Zing Factor”.

Balsamic Tomatoes with Onions #oven #roasted sun-dried tomatoes #balsamic #onions #vegan #vegetarian

Now where did that recipe go?

I finally finished off the stash of frozen roasted tomatoes and I decided to make more. But, to my dismay I couldn’t find the recipe for those amazing roasted tomatoes anywhere.

I guess I never pinned it. Never saved it or print it. I searched high and low. Google search after Google search came up with nothing.

Admitting defeat, I figured I’d have to recreate it as best I could from what I remembered. Fortunately for me, it was a pretty easy recipe.

Roasted Tomatoes with Onions  #oven #roasted sun-dried tomatoes

My version of the roasted tomatoes

Here’s my version of those amazing Balsamic Roasted Tomatoes with Onions.

Make a big batch (these smell absolutely amazing as they roast!). Heck, make a double batch!

raw onions and tomatoes on a foil lined baking sheet.
onions & tomatoes before roasting

Make them soon!

I know, you’re thinking, “but it’s summer and its way too hot to turn the oven on”.

Trust me on this one, these are worth it!

tomatoes and onions sliced and ready to roast on a baking sheet.
Another batch of them all sliced up.

Grab some great tomatoes

Make this with some juicy fragrant summer tomatoes either from your garden or from the Farmer’s Market. The big ones. I’d skip the cherry tomatoes for this recipe because it’s in the oven for so long they might just burn.

Store it in the freezer and just defrost in the microwave as needed.

Use these anywhere you would sun-dried tomatoes. And, I’ll be bringing you some great recipes using these babies.

Recipes using Balsamic Roasted Tomatoes with Onions

Braised Beef with Balsamic Roasted Tomatoes
A fancy full flavored beef stew with balsamic tomatoes. Serve over mashed potatoes for a family friendly dinner.
Check out this recipe
a white bowl filled with beef stew topped with green onions.
Brie and Balsamic Roasted Tomato Crostini
Brie and Balsamic Roasted Tomato Crostini — Crostini: fancy word for toast with yummy goodies on top! A perfect appetizer for summer parties or fancy holiday gatherings.
Check out this recipe
Orzo with Balsamic Tomatoes and Basil
A great side dish or serve it as a light lunch.
Check out this recipe
Gnocchi with Balsamic Tomatoes and Caramelized Onions
Gnocchi with Balsamic Tomatoes and Caramelized Onions is so good and so easy to make. You’ll love all the great flavors going on in this easy vegetarian weeknight meal.
Check out this recipe
Baked Meatballs in Balsamic Tomato Sauce
Baked Meatballs in Balsamic Tomato Sauce.. a full flavored rich tomato sauce, topped with melty gooey fresh mozzarella, it’s Italian food, kicked up a notch or two!
Check out this recipe
Crock Pot Braised Beef with Balsamic Tomatoes
Easy to make and delicious, complex, full flavored, braised beef made in the crock pot or slow cooker. Change the servings by using the slider in the recipe card.
Check out this recipe
Crock Pot Braised Beef with Balsamic Tomatoes recipe

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Balsamic Roasted Tomatoes with Onions: use them anywhere you'd use sun-dried tomatoes, but these babies have been kicked up a notch! And, they're easy to make.

Balsamic Roasted Tomatoes with Onions Recipe

square crop looking down on roasted tomatoes and onions on a baking tray.

Balsamic Roasted Tomatoes with Onions

Debi
A bit of roasting in the oven to make an amazing smelling and totally delicious Balsamic Roasted Tomatoes with Onions that can be used in so many dishes!
4.96 from 23 votes
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Prep Time 10 minutes mins
Cook Time 3 hours hrs
Total Time 3 hours hrs 10 minutes mins
Course Side Dish
Cuisine American
Servings 16 servings
Calories 42 kcal

Ingredients
  

  • 1 ½ large yellow onions thinly sliced into 1-2 inch strips
  • 4 lbs tomatoes cut into quarters or sixths if very large
  • 2 tablespoons olive oil
  • 2 tablespoons balsamic vinegar
  • 1 teaspoon salt

Instructions
 

  • Preheat oven to 250° F.
  • Place onion slices and tomato wedges on a foil, parchment, or silpat lined baking sheet. Drizzle oil and vinegar over, and sprinkle with salt. Toss gently to combine and coat tomatoes.
  • Roast in 250° oven for 3 hours, stirring every hour. Once the roasting time is up, turn the oven off leaving the roasted tomatoes inside the oven to cool.
  • Once the tomatoes have cooled, use in recipes, or store in a tightly covered glass container in the fridge for up to 3 days, or freeze for longer term storage.

Notes

I suggest not using cherry tomatoes for this recipe. They are in the oven for so long they might burn. Use a regular to larger tomato for this recipe.
Use Roasted Tomatoes in any recipe that calls for sun-dried tomatoes

Nutrition

Calories: 42kcalCarbohydrates: 6gProtein: 1gFat: 2gSaturated Fat: 0.3gPolyunsaturated Fat: 0.3gMonounsaturated Fat: 1gSodium: 152mgPotassium: 286mgFiber: 2gSugar: 4gVitamin A: 945IUVitamin C: 16mgCalcium: 14mgIron: 0.4mg

Nutritional information is based on third-party calculations, and should be considered estimates. Actual nutritional content will vary based on brands used, measuring methods, portion sizes, and more.

Keyword roasted, tomato, tomatoes
Tried this recipe?Mention @LifeCurrents or tag #LifeCurrents!
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Filed Under: Sauces, Condiments, & Preserves, Side Dishes, Vegan Tagged With: balsamic, Cooking, Food, gluten-free, healthy, ingredients, onions, recipe, roasted, sauce, sun dried tomatoes, tomato, vegan, vegetarian

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about debi

ABOUT DEBI

Hello! I’m Debi, the girl behind Life Currents where I write about mainly healthy vegetarian dishes. My husband eats meat, so occasionally I share some of his dishes as well. And, I’ll share tasty treats and projects that we do. Read more...

Previous Post: « Homemade Sunscreen
Next Post: Brie and Balsamic Roasted Tomato Crostini »

Reader Interactions

Comments

  1. Lucero De La Tierra

    July 24, 2014 at 10:42 am

    5 stars
    Another option is to fire up the grill if it’s too hot to turn on the oven indoors. 😉 My mom loves recipes like this so I’ll have to share it with her.

  2. Amy

    August 5, 2014 at 1:56 pm

    5 stars
    The slow roasting just makes these tomatoes so sweet and delicious! Lovely recipe!

  3. Elizabeth

    January 23, 2016 at 11:18 pm

    Mmmm these look amazing! I bet they’d whizz up into an amazing sauce too.

  4. Herman

    July 16, 2017 at 10:24 am

    Is it 250 degrees C or F??

  5. Debi

    July 16, 2017 at 12:05 pm

    Herman, 250 degrees F, and I’ll update the recipe card as well. Thanks.

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Hi! I’m Debi, the girl behind Life Currents, where I write about mainly healthy vegetarian dishes with some great desserts and other goodies mixed in! Read More >>>

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