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Homemade Blooming Onion with Secret Dipping Sauce

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This homemade Blooming Onion is a showstopping appetizer with crispy, golden petals and a zesty dipping sauce. It’s seasoned to perfection, fried until crunchy, and perfect for sharing with friends and family.

  • Total Time: 30 minutes
  • Yield: 1 large blooming onion (serves 4)

Ingredients

  • 1 large sweet onion (Vidalia or similar)
  • Vegetable oil, for frying
  • 1 cup milk
  • 1 large egg
  • 1 cup all-purpose flour
  • 1 tsp salt
  • 1/2 tsp cayenne pepper
  • 1 tsp paprika
  • 1/2 tsp ground black pepper
  • 1/2 tsp dried oregano
  • 1/2 tsp dried thyme
  • 1/2 tsp ground cumin
  • 1/2 cup mayonnaise
  • 2 tbsp cream-style horseradish sauce
  • 1 tbsp ketchup
  • 1/2 tsp paprika
  • 1/4 tsp cayenne pepper
  • 1/4 tsp salt
  • 1/4 tsp dried oregano
  • 1/4 tsp ground black pepper

Instructions

  1. In a bowl, combine mayonnaise, horseradish, ketchup, paprika, cayenne, salt, oregano, and black pepper. Mix well and refrigerate the dipping sauce.
  2. In a separate bowl, whisk together milk and egg. In another bowl, mix flour with salt, cayenne, paprika, pepper, oregano, thyme, and cumin.
  3. Peel and trim the onion, keeping the root intact. Cut into 16 wedges (not all the way through the root) to create petals. Gently separate petals.
  4. Dip the onion in the milk-egg mixture, then coat thoroughly with seasoned flour. Repeat for a double coating.
  5. Heat oil to 350°F (175°C). Fry onion cut-side up for about 10 minutes until golden and crispy.
  6. Drain on paper towels or a wire rack. Serve hot with the dipping sauce in the center.

Notes

  • Pat onion dry before battering to help coating stick.
  • Double-dipping ensures an extra crispy crust.
  • Use an air fryer at 375°F for 15–20 mins or bake at 400°F for 25–30 mins for lighter options.
  • Substitute Greek yogurt for mayo in the dip for a healthier version.
  • Leftovers can be reheated in the oven or air fryer to restore crispiness.
  • Author: Amelia
  • Prep Time: 20 minutes
  • Cook Time: 10 minutes
  • Category: Appetizer
  • Method: Frying
  • Cuisine: American
  • Diet: Vegetarian

Nutrition

  • Serving Size: 1/4 onion with sauce
  • Calories: 320
  • Sugar: 4g
  • Sodium: 580mg
  • Fat: 22g
  • Saturated Fat: 4g
  • Unsaturated Fat: 16g
  • Trans Fat: 0g
  • Carbohydrates: 25g
  • Fiber: 2g
  • Protein: 4g
  • Cholesterol: 45mg