Caramelized Peppers & Onions

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Say goodbye to ho-hum sides. These simple caramelized peppers and onions are slightly sweet, deeply savory, and packed with flavor!

onions and peppers in bowl with salt, pepper, and thyme on side

There’s something almost magical about sautéing peppers and onions. The peppers go from crisp and fresh to soft, silky, and lightly charred, while the onions mellow out and caramelize, losing their sharp bite. It’s a simple combination, but so satisfying. This dish is the perfect side for steak, spicy Italian sausage, or a bowl of warm, creamy polenta.

“This was sooo good! I have made the classic peppers and onions over the years and it was nothing special. This recipe nails it!”

Pamela O’Connor

What You’ll Need To Make Caramelized Onions And Peppers

caramelized onions and peppers
  • Extra Virgin Olive Oil: Provides a rich base for sautéing, enhancing the natural sweetness of the onions and peppers.
  • Yellow Onion: Caramelizes as it cooks, adding deep, sweet, and savory flavor to the dish.
  • Bell Peppers: Bring a vibrant pop of color, natural sweetness, and a tender bite.
  • Balsamic Vinegar: Introduces a touch of acidity and sweetness, brightening the whole dish.
  • Fresh Thyme: Adds an earthy, aromatic note that complements the sweetness of the vegetables. Dried thyme will work here as well.
  • Jump to the printable recipe for precise measurements

Step-By-Step Instructions

Heat the oil in a large skillet over medium-high, then toss in the onions and peppers, sprinkling on the salt and pepper as you go. Turn the heat down to medium-low and let them cook, stirring often, until the onions are caramelized and the peppers are soft and slightly browned—this should take 15 to 20 minutes. If you notice a brown layer forming on the bottom of the pan, just add a splash of water and stir it in, repeating as needed. Once everything looks beautifully golden, add the balsamic vinegar and thyme.

Turn the heat down to low, give everything a good stir, and let it cook for a few more minutes. Taste and add more salt or pepper if needed. Serve warm or at room temperature—either way, it’s delicious!

onions and peppers in bowl

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Caramelized Peppers & Onions

onions and peppers in bowl with salt, pepper, and thyme on side

Turn ordinary dinners into something special with this easy sautéed peppers and onions recipe.

Servings: 4
Prep Time: 10 Minutes
Cook Time: 15 Minutes
Total Time: 25 Minutes

Ingredients

  • 2 tablespoons extra virgin olive oil
  • 1 large yellow onion, peeled and sliced into ¼-inch strips
  • 4 bell peppers, stemmed, seeded and cut into ¼-inch strips
  • ½ teaspoon salt
  • ½ teaspoon freshly ground black pepper
  • 2 teaspoons balsamic vinegar
  • 1 teaspoon fresh thyme, finely chopped (or ½ teaspoon dried thyme)

Instructions

  1. Heat the oil in a large skillet over medium-high heat. Add the onions, peppers, salt and pepper.
  2. Reduce the heat to medium-low and cook, stirring frequently, until the onions are caramelized and the peppers are tender and slightly browned, 15 to 20 minutes. If a brown coating forms on the bottom of the pan during the cooking process, add a few tablespoons of water and stir; repeat as necessary.
  3. Add balsamic vinegar and thyme and turn the heat down to low. Cook for a few more minutes. Taste and adjust seasoning, if necessary. Serve hot or at room temperature.

Nutrition Information

Powered by Edamam

  • Per serving (4 servings)
  • Calories: 108
  • Fat: 7 g
  • Saturated fat: 1 g
  • Carbohydrates: 11 g
  • Sugar: 7 g
  • Fiber: 3 g
  • Protein: 2 g
  • Sodium: 298 mg
  • Cholesterol: 9 mg

This website is written and produced for informational purposes only. I am not a certified nutritionist and the nutritional data on this site has not been evaluated or approved by a nutritionist or the Food and Drug Administration. Nutritional information is offered as a courtesy and should not be construed as a guarantee. The data is calculated through an online nutritional calculator, Edamam.com. Although I do my best to provide accurate nutritional information, these figures should be considered estimates only. Varying factors such as product types or brands purchased, natural fluctuations in fresh produce, and the way ingredients are processed change the effective nutritional information in any given recipe. Furthermore, different online calculators provide different results depending on their own nutrition fact sources and algorithms. To obtain the most accurate nutritional information in a given recipe, you should calculate the nutritional information with the actual ingredients used in your recipe, using your preferred nutrition calculator.

Gluten-Free Adaptable Note

To the best of my knowledge, all of the ingredients used in this recipe are gluten-free or widely available in gluten-free versions. There is hidden gluten in many foods; if you're following a gluten-free diet or cooking for someone with gluten allergies, always read the labels of your ingredients to verify that they are gluten-free.

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Comments

  • Has anyone made this and added jalapeno?

    • — Beth on April 5, 2025
    • Reply
    • Not as far as I know.

      • — Jennifer Segal on April 7, 2025
      • Reply
  • Hi Jenn – I made these and they were fanrastic. I have a wood fired pizza oven and used these as a topping with fontina cheese and my homemade pizza sauce. I made three different pizzas that night and my guests all agreed that the one with the onions and peppers was the best.

    • — Fabrizio on July 3, 2023
    • Reply
  • Made it last night and it was the best peppers and onion recipe I have found.

    • — Jerry Mercola on June 18, 2023
    • Reply
  • Making this for the second time to go with the Moroccan chicken tangine. They are great together.

  • Made this for dinner tonight and it came out delicious! Made it exactly how the recipe calls for . Will be making more of your dishes . A+

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