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Cheesy Crispy Onion Rings filled with Mozzarella

This dish features large onion rings that are battered and deep-fried until golden and crispy. The batter is filled with gooey mozzarella cheese, creating molten pockets inside the crunchy exterior. The final result is a savory, cheesy bite with a satisfying crunch and melty cheese pull.
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Prep Time 15 minutes
Cook Time 10 minutes
Total Time 25 minutes
Servings: 4
Course: Main Course
Cuisine: American
Calories: 280
Ingredients Equipment Method Notes

Ingredients
  

  • 2 large onions peeled and sliced into thick rings
  • 8 oz mozzarella cheese cut into 1-inch cubes
  • 1 1/2 cups all-purpose flour for batter coating
  • 1 cup cold water to create batter
  • 1 large egg lightly beaten
  • 1 tsp baking powder helps batter become crispy
  • 1 tsp salt
  • 2 cups panko breadcrumbs for extra crunch
  • oil for frying vegetable oil enough for deep frying

Equipment

  • Deep-frying pan or Dutch oven
  • Mixing bowls

Method
 

  1. Slice the onions into thick, rounds, making large rings and set aside.
  2. Prepare the mozzarella cubes by cutting them into 1-inch pieces; set aside to stuff into the onion rings later.
  3. In a mixing bowl, whisk together all-purpose flour, baking powder, and salt. Gradually add cold water and the beaten egg, stirring until the batter is smooth and slightly thickened.
  4. Line a shallow dish with panko breadcrumbs for coating the onion rings.
  5. Carefully stuff a cube of mozzarella into the center of each onion ring, pressing gently to secure it inside.
  6. Dip each stuffed onion ring into the batter, ensuring it’s evenly coated all around.
  7. Next, roll the coated onion rings in the panko breadcrumbs, pressing lightly so they adhere well.
  8. Heat vegetable oil in a deep-frying pan over medium-high heat until it reaches about 350°F (175°C); you can test by dropping a small piece of bread—if it sizzles and bubbles, it’s ready.
  9. Carefully drop the prepared onion rings into the hot oil, frying in batches to avoid overcrowding. Fry for about 3-4 minutes until golden brown and crispy, turning occasionally for even color.
  10. Remove the onion rings with a slotted spoon and drain on paper towels to remove excess oil, revealing a crispy, golden exterior.
  11. Serve immediately, allowing the molten mozzarella inside to be enjoyed with the crispy onion exterior.

Notes

For an extra touch, drizzle truffle oil over the onion rings before serving. Make sure the cheese is well-stuffed for gooey molten centers. Be careful when frying to prevent splatters and ensure safety.