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Buttery Roasted Onions

These roasted onions are wonderfully flavorful and caramelized. They're the perfect side dish or topping for meat and poultry dishes.

Prep Time
15 mins
Cook Time
15 mins
Total Time
55 mins
Servings: 2 servings
Calories: 123 kcal
Course: Side Dish
Cuisine: American

Ingredients

  • 2 tablespoons butter plus more for the pan
  • 1 medium onion
  • ½ teaspoon Diamond Crystal kosher salt or ¼ teaspoon of any other salt, including Morton kosher salt

Instructions

    Cup of Yum
  1. Preheat the oven to 400°F. Grease a square 8-inch Pyrex baking dish with butter.
  2. Peel the onion and slice it into ¼-inch-thick slices. You should get five slices.
  3. Arrange the slices in a single layer in the prepared baking dish. Melt the butter and pour it over the onions. Sprinkle them with kosher salt.
  4. Roast the onions until the bottoms are golden, about 20 minutes.
  5. Turn the onion slices to the other side and bake them until golde brown, about 20 more minutes.
  6. Serve immediately.

Notes

  • You can double this recipe and use a 9 X 13-inch Pyrex pan or a parchment-lined rimmed baking sheet.
  • Keep a close eye on the onions during the last 10 minutes of baking to make sure they don't burn. Your oven might run hotter than mine. Their edges should be deep brown, not black. 
  • Since the onions are so flavorful, I don't add any other seasonings. But if you'd like, you can season the onions with garlic powder and oregano, using ¼ teaspoon of each. You can also sprinkle them with grated Parmesan cheese after flipping them. 
  • You can keep the leftovers in a sealed container in the fridge for 3-4 days. Reheat them, covered, in the microwave at 50% power. Alternatively, chop the leftovers and mix them into an omelet or a scramble.

Nutrition Information

Serving 0.5recipe Calories 123kcal (6%) Carbohydrates 5g (2%) Protein 1.7g (3%) Fat 11g (17%) Saturated Fat 7g (35%) Sodium 363mg (15%) Fiber 1g (4%) Sugar 2g (4%)

Nutrition Facts

Serving: 2servings

Amount Per Serving

Calories 123

% Daily Value*

Serving 0.5recipe
Calories 123kcal 6%
Carbohydrates 5g 2%
Protein 1.7g 3%
Fat 11g 17%
Saturated Fat 7g 35%
Sodium 363mg 15%
Fiber 1g 4%
Sugar 2g 4%

* Percent Daily Values are based on a 2,000 calorie diet.