Rory's Guaranteed Rise Sourdough Cinnamon Rolls
Ingredients:
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4 cups all-purpose flour
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1 cup fed sourdough starter
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¾ cup lukewarm milk
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¾ cup white sugar
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1 teaspoon instant yeast
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½ cup butter, melted and cooled
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1 egg, at room temperature
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½ teaspoon salt
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½ cup butter, melted and cooled
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1 cup brown sugar, or more to taste
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3 tablespoons ground cinnamon
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½ pound confectioners' sugar
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1 (4 ounce) package softened cream cheese
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¼ cup softened butter
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1 teaspoon vanilla extract