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Preheat your oven to 375°F. Line a large baking sheet with parchment paper, ensuring it covers the entire surface.

In a medium bowl, combine the grated Parmesan cheese and shredded mozzarella cheese. Set aside.

Drizzle the olive oil evenly over the parchment paper on the baking sheet. Then, spread the combined grated cheeses in a thin, uniform layer over the oiled parchment, covering most of the sheet.

Carefully slice the yellow onions into 1/4-inch thick rings. Gently separate the rings.

Arrange the onion rings in a single layer over the cheese base on the baking sheet. Try to keep them close together but avoid heavy overlapping, as this can prevent even crisping.

Generously season the arranged onion rings with paprika, salt, and freshly ground black pepper.

Bake for 20 to 25 minutes, or until the cheese is melted, bubbly, and golden brown, and the onion rings are tender, caramelized, and crispy at the edges.

Remove the baking sheet from the oven and let the crispy onion and cheese sheet cool on the baking sheet for 5 to 10 minutes. This cooling period is crucial for the cheese to firm up and become extra crispy, making it easier to handle.

Once cooled slightly, carefully peel the entire sheet of crispy onions and cheese off the parchment paper. You can then break it into individual rings or cut it into desired pieces. Serve warm as a snack or appetizer.


Preheat your oven to 375°F. Line a large baking sheet with parchment paper, ensuring it covers the entire surface.

In a medium bowl, combine the grated Parmesan cheese and shredded mozzarella cheese. Set aside.

Drizzle the olive oil evenly over the parchment paper on the baking sheet. Then, spread the combined grated cheeses in a thin, uniform layer over the oiled parchment, covering most of the sheet.

Carefully slice the yellow onions into 1/4-inch thick rings. Gently separate the rings.

Arrange the onion rings in a single layer over the cheese base on the baking sheet. Try to keep them close together but avoid heavy overlapping, as this can prevent even crisping.

Generously season the arranged onion rings with paprika, salt, and freshly ground black pepper.

Bake for 20 to 25 minutes, or until the cheese is melted, bubbly, and golden brown, and the onion rings are tender, caramelized, and crispy at the edges.

Remove the baking sheet from the oven and let the crispy onion and cheese sheet cool on the baking sheet for 5 to 10 minutes. This cooling period is crucial for the cheese to firm up and become extra crispy, making it easier to handle.

Once cooled slightly, carefully peel the entire sheet of crispy onions and cheese off the parchment paper. You can then break it into individual rings or cut it into desired pieces. Serve warm as a snack or appetizer.
