Onion Boil

A simple and comforting onion recipe where a whole onion is baked with butter and seasonings until tender and spoonable, perfect as a side dish or a cozy snack.

Print Recipe Pin Recipe

Prep Time 10

Cook Time 1

Total Time 1 10

Servings: 1 onion

Course: Side Dish, Snack

Cuisine: American

Calories: 150

Ingredients Method Notes

Ingredients

For the onion boil

1 large large onion Sweet onions like Vidalia are best but yellow and red onions can be used too.
2-3 tablespoons butter Modify the amount based on preference.
1-1.5 teaspoons Cajun seasoning Can substitute with other favorite seasoning blends.
1 clove garlic, minced Or use 1/2 teaspoon garlic powder.
to taste salt Adjust according to seasoning preference.
to taste black pepper Adjust according to taste.
splash lemon juice Optional, for added flavor.
pinch brown sugar Optional, for a hint of sweetness.
to taste chopped parsley Optional, for garnish.

Method

Preparation

Heat your oven to 400°F (200°C).
Peel the onion and trim the root end slightly so it sits flat, but keep it mostly intact.
Cut a deep cross on top of the onion to allow butter to seep inside.
Place the onion in the center of a foil sheet.
Top the onion with butter, then sprinkle with garlic, seasoning, a pinch of salt, and pepper.
Wrap the onion tightly in the foil to create a pouch.

Cooking

Bake for 45 to 60 minutes, checking for tenderness with a knife. Larger onions may take closer to 70 minutes.
Carefully open the foil (beware of hot steam) and spoon the buttery juices over the onion before serving.
For added flavor, open the foil for the last 5 minutes for a roasted effect.

Notes

Store leftovers in an airtight container in the fridge for up to 3 days. Reheat in the oven or air fryer for the best flavor. You can also chop leftover onion to add instant flavor to eggs, pasta, or rice.