Why You’ll Love This Recipe

This onion boil offers a perfect balance of sweet, tender baked onion with bold Cajun and Old Bay spices. It’s simple to prepare, requires minimal ingredients, and makes a great side or snack with deep flavor and melt-in-your-mouth texture. Plus, it’s baked in foil for easy cleanup and juiciness retention.

Ingredients

(Tip: You’ll find the full list of ingredients and measurements in the recipe card below.)

1 large yellow onion
½ teaspoon Cajun seasoning
½ teaspoon Old Bay seasoning
¼ teaspoon kosher salt
¼ teaspoon dried parsley
¼ teaspoon garlic powder
⅛ teaspoon black pepper
1 tablespoon butter, melted

Directions

Preheat your oven to 375°F (190°C).
Trim the ends off both sides of the onion. Using a melon baller or spoon, scoop out the center of the onion about halfway down, creating a cavity.
Place the onion in the center of a large piece of aluminum foil on a rimmed baking sheet.
In a small bowl, mix all the spices together. Scoop half of this seasoning mixture into the cavity of the onion and sprinkle the rest over the onion’s surface.
Pour the melted butter into the onion cavity, then add any remaining spices.
Bring the foil sides together to create a sealed packet around the onion.
Bake for 45 to 50 minutes, until the onion is tender and fully cooked.
Carefully open the foil and serve immediately.

Servings and Timing

Servings: 1
Prep Time: 10 minutes
Cook Time: 50 minutes
Total Time: 1 hour

Variations

Add shredded cheese over the top during the last 5 minutes of baking for a cheesy twist.
Include chopped fresh herbs like thyme or rosemary for extra aroma.
Swap the Cajun seasoning with smoked paprika or chili powder for a different spice profile.
Serve with crusty bread to soak up the buttery juices.

Storage/Reheating

Store any leftovers in an airtight container in the refrigerator for up to 2 days.
Reheat gently in the oven wrapped in foil to retain moisture.

FAQs

1. Can I use other types of onions?

Yes, sweet onions or red onions can be used, but yellow onions provide the best balance of sweetness and flavor.

2. Is this recipe spicy?

It has a mild to moderate spice from the Cajun and Old Bay seasonings, which you can adjust to taste.

3. Can I prepare this in advance?

You can prep the onion and seasoning ahead but bake right before serving for best texture.

4. Can I add garlic cloves inside?

Yes, adding minced garlic or whole cloves into the cavity adds a nice garlicky aroma.

5. What can I serve this with?

It pairs well with grilled meats, roasted vegetables, or as a flavorful side for any meal.

6. Can I make this vegan?

Use vegan butter or olive oil instead of butter for a vegan-friendly option.

7. Can I double the recipe?

Yes, just prepare more onions and bake them individually in foil packets.

8. How do I know when the onion is done?

It should be very tender and easily pierced with a fork.

9. Can I cook this on a grill?

Yes, you can wrap the onion packet in foil and grill over medium heat for about 45 minutes.

10. Is this recipe gluten-free?

Yes, all ingredients are naturally gluten-free.

Conclusion

This Onion Boil is a simple yet flavorful dish that elevates the humble onion into a delicious, buttery, and spiced delight. Its easy preparation and bold seasoning make it a perfect side dish or snack for any occasion. Give it a try and enjoy the comforting taste and tender texture that everyone will love.

Onion Boil

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This viral onion boil recipe is wonderfully delicious and incredibly easy to make. It’s a flavorful, buttery baked onion dish seasoned with a blend of spices for a comforting and savory treat.

Author: Amy
Prep Time: 10 minutes
Cook Time: 50 minutes
Total Time: 1 hour
Yield: 1 serving
Category: Side dish
Method: Baking
Cuisine: American
Diet: Gluten Free

Ingredients

1 large yellow onion

½ teaspoon Cajun seasoning

½ teaspoon Old Bay seasoning

¼ teaspoon kosher salt

¼ teaspoon dried parsley

¼ teaspoon garlic powder

⅛ teaspoon black pepper

1 tablespoon butter, melted

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Instructions

Preheat your oven to 375°F (190°C).
Trim the ends off both sides of the onion. Using a melon baller or spoon, scoop out the center of the onion about halfway down, creating a cavity.
Place the onion in the center of a large piece of aluminum foil on a rimmed baking sheet.
In a small bowl, mix all the spices together. Scoop half of this seasoning mixture into the cavity of the onion and sprinkle the rest over the onion’s surface.
Pour the melted butter into the onion cavity, then add any remaining spices.
Bring the foil sides together to create a sealed packet around the onion.
Bake for 45 to 50 minutes, until the onion is tender and fully cooked.
Carefully open the foil and serve immediately.