INGREDIENTS
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2 cups flour
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¾ teaspoons baking powder
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½ teaspoon salt
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1 stick plus 2 tablespoons (5 ounces) butter, at room temperature
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¼ cup brown sugar
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¼ cup sugar
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1 large egg, at room temperature
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½ teaspoon vanilla
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¾ to 1 cup thick cherry jam or an equal amount of vanilla pastry cream (use your favorite recipe)
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1 egg beaten with a splash of water, for the glaze