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Slow roasted onions in a white serving bowl.
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5 from 1 vote

Slow Roasted Onions Recipe

These slow roasted onions are an easy, budget-friendly, flavor-loaded side dish that can be prepared in advance. This dish is perfect for the holidays and pairs well with most main courses.
Prep Time5 minutes
Cook Time2 hours
Total Time2 hours 5 minutes
Course: Side Dish
Cuisine: American
Servings: 9
Calories: 56kcal

Ingredients

  • 4 cups roughly chopped onions (any type of onion is fine)
  • 2 tablespoons extra virgin olive oil
  • 1/2 teaspoon dried thyme
  • 1/8 teaspoon salt
  • 1/8 teaspoon black pepper

Instructions

  • Preheat the oven to 300 degrees Fahrenheit.
  • Roughly chop the onions.
  • Add the chopped onions, extra virgin olive oil, dried thyme, salt, and pepper to a large baking dish (mine is 9 x 13 inches but any similar size is fine).
  • Toss the ingredients with your hands or a spoon, ensuring that the onions are coated with oil.
  • Bake at 300 degrees Fahrenheit for 60 minutes, stir, then continue to bake for 60 additional minutes or until they’re golden brown around the edges.

Notes

  • Store these slow roasted onions in an airtight container in the fridge for up to three days, then reheat before serving or enjoy them at room temperature.

Nutrition

Serving: 0.33Cup | Calories: 56kcal | Carbohydrates: 7g | Protein: 1g | Fat: 3g | Saturated Fat: 1g | Polyunsaturated Fat: 1g | Monounsaturated Fat: 2g | Sodium: 35mg | Potassium: 105mg | Fiber: 1g | Sugar: 3g | Vitamin A: 4IU | Vitamin C: 5mg | Calcium: 18mg | Iron: 1mg