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Close-up of a whole onion, scored like a flower, covered in spicy, glistening Cajun seasoning for a Spicy Cajun Onion Boil.

Spicy Cajun Onion Boil

This recipe creates tender, baked onions coated in a bold, spicy butter mixture. It is a satisfying side dish featuring Cajun seasoning.
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Prep Time 10 minutes
Cook Time 1 hour
Total Time 1 hour 10 minutes
Course Side Dish
Cuisine Southern
Servings 4 onions

Equipment

  • Oven
  • Aluminum foil

Ingredients
  

  • 4 large onions peeled
  • 4 tbsp unsalted butter
  • 1.5 tsp Cajun seasoning
  • 0.5 tsp paprika
  • 0.25 tsp cayenne pepper adjust to taste
  • Salt & black pepper

Instructions
 

  • Preheat your oven to 400°F (200°C).
  • Place each onion on a large sheet of foil.
  • Top each onion with butter, Cajun seasoning, paprika, cayenne, salt, and pepper.
  • Wrap the foil tightly around each onion to seal it completely.
  • Bake for 50 to 60 minutes until the onions are very tender when pierced.
  • Carefully open the foil packets and spoon the spicy butter mixture over the onions before you serve them.

Notes

During testing, the Cajun seasoning added enough heat to make this onion boil deeply satisfying without overpowering the flavor.
By Emily Mitchell, Efficiency & Testing Coordinator at Recipes by Betty.
Keyword Baked Onions Whole, Easy Dinner Recipes For Family, Seafood Boil Side Dishes, Spicy Cajun Onion Boil, Supper Ideas