INGREDIENTS
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2 1/4 teaspoons active dry yeast
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1 cup water warm (110-120°F)
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1/2 cup granulated sugar
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1/4 cup buttermilk
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2 large eggs
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7 tablespoons unsalted butter, divided
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5 1/2-6 cups all-purpose flour
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2 teaspoons kosher salt
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1/2 cup unsalted butter, softened
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1 1/2 cups light brown sugar, packed
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2 tablespoons ground cinnamon
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1 teaspoon cornstarch
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4 ounces cream cheese, softened
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1/4 cup unsalted butter, softened
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1 cups powdered sugar
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1/2 tablespoon fresh lemon juice
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1 teaspoon vanilla extract
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1/2 teaspoon kosher salt