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roasted sliced onions and mushrooms
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4.46 from 35 votes

Oven Portobello Mushrooms and Onions

Oven roasted portobello mushrooms and onions are the perfect addition to tacos, pizza, wraps and salads. Balsamic vinegar adds a flavor boost you will love! So easy- the veggies roast in the oven while you prep your meal.
Prep Time10 minutes
Cook Time45 minutes
Total Time55 minutes
Course: Side Dish
Cuisine: American
Diet: Diabetic, Low Calorie, Low Lactose, Vegetarian
Servings: 4
Calories: 104kcal

Ingredients

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

Instructions

  • 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.

Notes

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.
 

Nutrition

Calories: 104kcal | Carbohydrates: 9g | Protein: 2g | Fat: 7g | Saturated Fat: 1g | Polyunsaturated Fat: 1g | Monounsaturated Fat: 5g | Sodium: 152mg | Potassium: 275mg | Fiber: 2g | Sugar: 5g | Vitamin A: 14IU | Vitamin C: 6mg | Calcium: 19mg | Iron: 1mg