INGREDIENTS
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1 1/2 cups cake flour
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2 1/2 teaspoons baking powder
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1 teaspoon kosher salt
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3/4 cups (1 1/2 sticks) unsalted butter at room temperature, plus more for the baking pan
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1 1/2 cups part-skim ricotta cheese
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1 1/2 cups sugar, plus one tablespoon
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3 large eggs
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1 teaspoon vanilla
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zest from one lemon
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juice from one lemon (about 2 tablespoons)