Baked Red Onion

Prep: 10 min Cook: 55 min Serves: 4

Tender baked red onions infused with a tangy vinegar glaze and aromatic sage, perfect as a side dish for dinners or gatherings highlighting simple, flavorful ingredients.

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Ingredients

  • 2 large red onions
  • 1 Tbsp. red wine vinegar
  • 3 Tbsp. water
  • 2 tsp. granulated sugar replacement
  • 1/2 tsp. salt
  • 1/4 tsp. ground sage
  • 1/4 tsp. dry mustard

Instructions

  1. Peel and cut the red onions in half crosswise.
  2. Place the onion halves side by side, cut-side up, in a shallow 8-inch (20 cm) baking pan.
  3. In a small bowl, blend together the red wine vinegar, water, sugar replacement, salt, sage, and dry mustard.
  4. Pour the mixture over the onion halves.
  5. Bake at 350° F (175° C) for 50 to 60 minutes or until the onions are tender.

Tips & Substitutions

For added depth of flavor, consider using balsamic vinegar instead of red wine vinegar. If you're looking for a low-calorie option, a sugar replacement works well in this dish. Adjust the herbs based on your preference; thyme or rosemary could be excellent substitutes for sage. Ensure the onions are cut evenly for consistent cooking.

Serving Suggestions

Baked red onions make a delicious side dish to grilled meats or a robust vegetarian option paired with quinoa or couscous. They can also be sliced and added to salads or served atop a bed of greens with celery seed dressing for a refreshing contrast. For a complete meal, serve alongside baked fish or roasted vegetables.

Storage & Reheating

Leftover baked red onions can be stored in an airtight container in the refrigerator for up to three days. To reheat, place the onions in a baking dish and cover with foil to retain moisture, then warm them in a preheated oven at 350°F (175°C) for about 15 minutes, or until heated through.

Nutrition & Diet Analysis (per serving)

Each serving of Baked Red Onion contains roughly 25 calories, with 0g protein, 3g carbohydrates, and 1g fat.

25 kcal 1% DV
Protein Fat Carbs

Macronutrients

Protein 0.4g 1% DV
Total Fat 0.8g 1% DV
Carbs 2.5g 1% DV
Fiber 1.2g 4% DV
Sugar 0g

Electrolytes

Sodium 130mg 6% DV
Potassium 55.7mg 1% DV

Vitamins & Minerals

Vitamin A 7.4mcg 1% DV
Vitamin C 2.4mg 3% DV
Calcium 46.4mg 4% DV
Iron 1mg 5% DV
Diet fit Keto-friendly Under 400 cal Low-fat

Estimated from ingredients & per-serving nutrition — verify against package labels for allergies or strict diets.

* % Daily Values based on a 2,000 calorie diet (FDA 2020).

Frequently Asked Questions

Can I use different types of onions for this recipe?

Yes, while red onions provide a sweet flavor, you can also use yellow or white onions for a different taste. Keep in mind that cooking times may vary slightly depending on the onion type and size.

Is this recipe suitable for vegan diets?

Absolutely! This baked red onion recipe is completely vegan, making it a perfect addition to any plant-based meal. It's also versatile enough to fit into various vegan recipes, enhancing their flavor.

How can I enhance the flavor of the baked onions?

To elevate the taste, consider adding a sprinkle of fresh herbs like thyme or parsley before serving. You could also drizzle a little olive oil or balsamic glaze over the onions after baking for extra richness.

Nutrition is estimated from USDA FoodData Central ingredient data and may vary with brand, portion and preparation — see our methodology. This information is for general educational purposes only and is not medical or dietary advice (disclaimer).

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