INGREDIENTS
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plus 2 Tbsp. sugar, divided
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ground cinnamon, divided
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Vegetable oil (for frying; about 4 cups)
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gluten-free old-fashioned oats
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rice flour
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cornstarch
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baking powder
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kosher salt
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large egg
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(or more) club soda
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large crisp apples, peeled, cored with an apple corer, sliced into ¼”-thick rings
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A deep-fry thermometer