Servings
Font
Back
4.7 from 132 votes

Marinated Roasted Onions

These roasted onions are juicy, tender, and marinated in red wine vinegar, herbs, and spices to create the ideal holiday side dish.

Prep Time
10 mins
Cook Time
1 hr
Marinate Time
8 hrs
Total Time
9 hrs 10 mins
Servings: 8
Calories: 90 kcal
Course: Side Dish
Cuisine: International

Ingredients

Marinade
  • 1 cup water
  • 1 cup red wine vinegar (or white or apple cider vinegars)
  • 2 tbsp brown sugar
  • 2 tsp fresh Rosemary chopped
  • 1/2 tsp kosher salt
  • 1/4 tsp black pepper
  • 1 pinch red pepper flakes optional
  • 4 large onions (See Note 1)
Roasting
  • 4 tbsp butter
  • 1 tsp fresh Rosemary chopped

Instructions

    Cup of Yum
  1. Blend marinade ingredients in small bowl and pour into a baking dish that will hold all 8 onion halves. I use 8x8" baking pan or round 12" baking stone (pictured) depending on size of onion.
  2. Trim the end of onions and cut horizontal (leaving skin on) and place cut side down in marinade. Marinate overnight covered in refrigerator.
  3. Preheat oven to 400°F. Flip the onions over in the marinade, and lay on the flat bottom of each side. Top each onion with 1/2 tablespoon of butter and remaining teaspoon of rosemary. 
  4. Roast uncovered in oven for 1 hour or until golden brown and tender, basting once or twice during roasting. Remove from heat, spoon reduced sauce over and sprinkle with parsley or more fresh chopped rosemary. Remove outer skins before eating and serve.

Notes

  • White, yellow, or red onion may be used. Trim ends off onions, slice in half horizontally, keeping the skin on to hold shape and protect the outside as it roasts. Just peel and discard the skins before serving.

Nutrition Information

Serving 1oz Calories 90kcal (5%) Carbohydrates 8g (3%) Protein 1g (2%) Fat 6g (9%) Saturated Fat 4g (20%) Cholesterol 15mg (5%) Sodium 203mg (8%) Potassium 92mg (3%) Fiber 1g (4%) Sugar 5g (10%) Vitamin A 177IU (4%) Vitamin C 4mg (4%) Calcium 19mg (2%) Iron 1mg (6%)

Nutrition Facts

Serving: 8Serving

Amount Per Serving

Calories 90

% Daily Value*

Serving 1oz
Calories 90kcal 5%
Carbohydrates 8g 3%
Protein 1g 2%
Fat 6g 9%
Saturated Fat 4g 20%
Cholesterol 15mg 5%
Sodium 203mg 8%
Potassium 92mg 2%
Fiber 1g 4%
Sugar 5g 10%
Vitamin A 177IU 4%
Vitamin C 4mg 4%
Calcium 19mg 2%
Iron 1mg 6%

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