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Blooming Onions Recipe – Easy Bite-Sized Party Appetizer Everyone Loves

blooming onions recipe - featured image

These bite-sized blooming onions are a lighter, baked twist on the classic fair favorite, featuring sweet onion petals coated in a crispy, seasoned crust. Perfect for parties, they’re easy to share, fun to eat, and totally addictive with your favorite dipping sauce.

Ingredients

Scale
  • 45 small to medium yellow onions (about 2 lbs/900g)
  • 1 cup all-purpose flour (120g)
  • 1/4 cup cornstarch (30g)
  • 2 large eggs
  • 1/2 cup milk (2% or whole, or non-dairy alternative, 120ml)
  • 1 teaspoon paprika
  • 1 teaspoon garlic powder
  • 1/2 teaspoon onion powder
  • 1/4 teaspoon cayenne pepper (optional)
  • 1 teaspoon salt (preferably kosher)
  • 1/2 teaspoon black pepper
  • Cooking spray or oil (for baking)
  • Chopped fresh parsley or chives (for garnish, optional)
  • Your favorite dipping sauce (ranch, spicy mayo, chipotle aioli, ketchup, optional)

Instructions

  1. Peel 4-5 small to medium yellow onions. Cut off the root just enough so the onion sits flat, but don’t trim too much or the petals will fall apart.
  2. Slice each onion in half from top to root. Place cut side down, then make 4-5 vertical cuts (like slicing a pie) to create petals, leaving about 1/2 inch at the base so they hold together.
  3. Gently separate the petals and place them in a large bowl of ice water for 5 minutes to help them open up and get extra crisp.
  4. In one bowl, whisk together flour, cornstarch, paprika, garlic powder, onion powder, cayenne (if using), salt, and black pepper.
  5. In another bowl, beat eggs with milk until smooth.
  6. Preheat oven to 425°F (220°C). Line a baking sheet with parchment or a silicone mat and lightly coat with cooking spray.
  7. Remove onion petals from ice water and pat dry thoroughly with paper towels.
  8. Dip each petal first in the flour mixture, then the egg wash, then back in the flour mixture. Shake off excess.
  9. Place coated petals on the prepared baking sheet, leaving space between each for crisping.
  10. Lightly spray or brush the tops with oil.
  11. Bake at 425°F (220°C) for 15-20 minutes, checking at 15 minutes. They should be crisp and golden.
  12. For extra crunch, flip petals with tongs and bake an additional 3-5 minutes if desired.
  13. Transfer to a serving platter, sprinkle with chopped parsley or chives, and serve immediately with your favorite dipping sauce.

Notes

For best results, soak onion petals in ice water to help them bloom and stay crisp. Double-dip in flour and egg for extra crunch. Space petals apart on the baking sheet for even crisping. To make gluten-free, use a cup-for-cup gluten-free flour blend. For dairy-free, use plant-based milk. Serve hot for maximum crunch. Leftovers can be reheated in the oven or air fryer. For extra flavor, add Parmesan to the coating or adjust spices to taste.

Nutrition

Keywords: blooming onions, party appetizer, baked onion petals, bite-sized snacks, easy appetizer, oven baked, gluten free option, vegetarian, party food, crispy onions