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Easy Caramelized Roasted Onions Recipe

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4.1 from 56 reviews

This recipe for Easy Caramelized Roasted Onions offers a simple and flavorful way to bring out the natural sweetness of onions. Roasted with olive oil and herbs, these tender and caramelized onions make a perfect side dish or topping for various meals.

  • Author: Sarah
  • Prep Time: 5 minutes
  • Cook Time: 40 minutes
  • Total Time: 45 minutes
  • Yield: 8 servings
  • Category: Side Dish
  • Method: Baking
  • Cuisine: American
  • Diet: Vegetarian

Ingredients

Ingredients

  • 4 medium onions (red, white, or yellow)
  • 4 Tbsp olive oil (60 mL)
  • Salt, to taste
  • Pepper, to taste (optional)
  • Fresh herbs (rosemary, thyme, parsley, etc.), optional

Instructions

  1. Prep Oven: Preheat your oven to 400°F (204°C) and line a baking pan with aluminum foil to catch drips and make cleanup easier.
  2. Prep Onions: Slice off the ends of each onion and cut them in half. Peel off the outer layers, then arrange the onion halves cut side up in a single layer on the prepared baking sheet, ensuring they are not crowded for even roasting.
  3. Season: Brush each onion half with olive oil using a brush or your fingers, coating thoroughly. Season generously with salt and pepper, and sprinkle fresh herbs on top if using, to enhance the flavor.
  4. Bake: Roast the onions in the preheated oven for 40 to 45 minutes until they become tender and develop a deep caramelized color. Remove from the oven and allow to cool slightly before serving.

Notes

  • Storage: Store leftover roasted onions in an airtight container in the refrigerator for up to 5 days or freeze them for up to 3 months.
  • Reheating: Reheat the onions in a 350°F oven until warmed through, or sauté quickly in a pan to revive their texture and flavor.