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Amazing Blooming Onion in the Oven Recipe


  • Author: Ella
  • Total Time: 50 minutes
  • Yield: 4 servings 1x

Description

This Amazing Blooming Onion recipe transforms a simple yellow onion into a crispy, golden-baked appetizer that resembles a blooming flower. Coated in a flavorful spiced batter and baked to perfection, it’s served with a tangy horseradish dipping sauce that complements the sweet and savory notes of the onion. Perfect for entertaining or a fun snack, this healthier oven-baked version skips the deep frying while still delivering big flavor and satisfying crunch.


Ingredients

Scale

Blooming Onion

  • 1 large yellow onion
  • 2 tablespoons olive oil
  • 1/2 cup all-purpose flour
  • 1 teaspoon paprika
  • 1/2 teaspoon garlic powder
  • 1/4 teaspoon cayenne pepper (optional)
  • 1/2 teaspoon salt
  • 1/4 teaspoon black pepper
  • 1/2 cup milk
  • 1 large egg

Dipping Sauce

  • 1/2 cup mayonnaise
  • 2 tablespoons ketchup
  • 1 tablespoon prepared horseradish
  • 1/2 teaspoon paprika
  • 1/4 teaspoon garlic powder
  • Pinch of cayenne pepper

Instructions

  1. Preheat oven: Preheat your oven to 400°F (200°C) and line a baking sheet with parchment paper to prevent sticking and facilitate easy cleanup.
  2. Prepare onion: Peel the onion and cut off about 1/2 inch from the top, keeping the root end intact as it will hold the onion together when sliced. Place the onion root-side up on a cutting board.
  3. Cut onion petals: Using a sharp knife, make 12 to 16 evenly spaced vertical cuts from the top of the onion down toward the root, stopping about 1/2 inch from the bottom to avoid cutting through the root. These cuts create the ‘petals’ of the blooming onion.
  4. Separate petals: Gently pull apart and loosen the onion petals without detaching them, allowing the onion to open like a flower.
  5. Mix dry coating: In a shallow bowl, whisk together the flour, paprika, garlic powder, cayenne pepper (if using), salt, and black pepper.
  6. Mix wet coating: In another shallow bowl, whisk together the milk and egg until combined.
  7. Dip onion in wet mixture: Submerge the onion into the milk and egg mixture, carefully coating all petals. Let excess drip off to avoid clumping.
  8. Dredge onion in dry mixture: Transfer the wet-coated onion into the flour mixture and thoroughly coat all petals, then gently shake off the excess flour mixture.
  9. Prepare for baking: Place the coated onion on the prepared baking sheet. Drizzle the olive oil over the entire onion to help it crisp and brown during baking.
  10. Bake: Bake in the preheated oven for 30-40 minutes until the onion is tender inside and the outside petals are crispy and golden brown.
  11. Make dipping sauce: While the onion bakes, combine the mayonnaise, ketchup, horseradish, paprika, garlic powder, and cayenne pepper in a small bowl and whisk until smooth and well combined.
  12. Serve: Remove the blooming onion from the oven and serve immediately with the prepared dipping sauce.

Notes

  • For a spicier version, increase the cayenne pepper in the coating and dipping sauce.
  • Use a very sharp knife to cut the onion petals to avoid tearing.
  • Make sure the onion is thoroughly coated for maximum crispiness.
  • Allow the onion to cool slightly before serving to avoid burning.
  • This recipe is a great healthier alternative to traditionally deep-fried blooming onion.
  • Prep Time: 15 minutes
  • Cook Time: 35 minutes
  • Category: Appetizer
  • Method: Baking
  • Cuisine: American

Keywords: blooming onion, oven baked onion, healthy blooming onion, appetizer recipe, horseradish dipping sauce