What is an onion boil?

An onion boil is actually a roasted whole onion that's been seasoned and cooked until incredibly tender. Despite the name, it's typically roasted in the oven rather than boiled in water, which allows the natural sugars to caramelize and develop complex, sweet flavors.

Is an onion boil good for you?

Absolutely! Onions are packed with antioxidants, vitamin C, and fiber. This preparation method preserves all those nutrients while creating an incredibly satisfying and flavorful dish. Plus, it's naturally vegan and relatively low in calories.

How much time to boil onions?

For this roasted preparation, plan on about 1 hour at 375°F. The exact time can vary depending on the size of your onion, but you'll know it's ready when it's completely fork-tender and the center jiggles slightly when gently shaken.

Is it okay to boil onions?

While this recipe is roasted rather than traditionally boiled, both methods are perfectly safe and delicious. Roasting develops more complex, caramelized flavors, while boiling creates a milder, more subtle taste. Choose the method that best fits your flavor preferences!

Delicious Onion Boil Recipe

Description

A hearty, satisfying dish with sweet caramelized onion and bold Cajun flavors, perfect for cozy comfort in a bowl.

Ingredients

Scale

1 large (15 oz) sweet onion, peeled and ends trimmed
1 tbsp vegan butter
1 tbsp extra virgin olive oil
1 tsp Cajun seasoning
1/4 tsp salt (plus more for serving)
Optional: 1/4 tsp garlic powder, 1/4 tsp Old Bay seasoning
Optional garnish: finely diced parsley leaves

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Instructions

Preheat oven to 375°F, placing the rack in the center.
Use a melon baller or small spoon to scoop out a well in the top center of the onion (about 1/3 deep).
Place the onion on foil, add vegan butter to the well, mix Cajun seasoning with olive oil, and pour over the onion. Add salt and optional seasonings.
Wrap onion tightly in foil and place in a small baking dish or skillet.
Roast for 1 hour. Check for fork-tenderness; if needed, reseal and cook for 10 more minutes.
(Optional) Broil for 5–10 minutes with extra oil or butter and salt for caramelization.
Peel off outer layer, pour juices over, and enjoy with extra salt if desired.

Notes

Ensure the onion is fully fork-tender before removing from oven.
Save and pour the flavorful drippings over the onion for extra taste.
Store leftovers in an airtight container for up to 3 days.

Prep Time: 5 minutes
Cook Time: 1 hour
Category: Side Dish
Method: Oven-Roasted
Cuisine: Comfort Food

Nutrition

Serving Size: 1/2 onion
Calories: 120
Sugar: 8g
Sodium: 250mg
Fat: 8g
Saturated Fat: 2g
Unsaturated Fat: 6g
Trans Fat: 0g
Carbohydrates: 12g
Fiber: 3g
Protein: 2g
Cholesterol: 0mg