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cooked mushrooms and onions on white plate
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4.47 from 26 votes

Balsamic Roasted Onions and Mushrooms

Put balsamic vinegar roasted vegetables in tacos, pizza, wraps and salads for a boost of flavor. So easy- the veggies roast in the oven while you prep your meal.
Prep Time10 mins
Cook Time45 mins
Total Time55 mins
Course: Side Dish
Cuisine: American
Diet: Diabetic, Low Calorie, Low Lactose, Vegetarian
Servings: 4
Calories: 104kcal


  • 2 Onions
  • 8 oz Mushrooms , sliced
  • 2 Tablespoons Olive Oil
  • 2 Tablespoons Balsamic Vinegar
  • ½ Teaspoon Thyme
  • ½ Teaspoon Black Pepper
  • ¼ Teaspoon Sea Salt


  • Preheat oven to 375 degrees.
  • Line a large baking sheet with foil and coat with nonstick spray. Set aside.
  • In a large bowl, combine all ingredients, mixing well.
  • Spread evenly onto baking sheet.
  • Roast in oven for 45 minutes or until roasted and tender, stirring halfway through baking time.
  • Use immediately or store in refrigerator for use later.


Expert Tips
  • Buy pre-sliced onions and mushrooms for convenience if desired.
  • Use a foil-lined pan for easier clean up.
  • Store in refrigerator up to 3 days.


Calories: 104kcal | Carbohydrates: 9g | Protein: 2g | Fat: 7g | Saturated Fat: 1g | Sodium: 152mg | Potassium: 270mg | Fiber: 2g | Sugar: 5g | Vitamin C: 6mg | Calcium: 13mg | Iron: 1mg