INGREDIENTS
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1/2 round loaf (about 9 inches in diameter) crusty sourdough bread
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4 large eggs
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1/2 cup buttermilk
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1/4 cup heavy cream
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3 tablespoons granulated sugar
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1 1/2 teaspoons vanilla extract
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1/4 teaspoon ground cinnamon
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1/2 to 3/4 cup confectioners' sugar
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2 tablespoons unsalted butter, plus more if needed
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Maple syrup, for topping