INGREDIENTS
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For the cookies:
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1/2 teaspoon baking soda
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1/4 teaspoon salt
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2 cups all-purpose flour
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1/2 cup unsalted butter, softened
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2/3 cup light brown sugar, packed
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1/4 cup brown sugar
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1 tablespoon vanilla extract (or vanilla bean paste)
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1 egg
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FOR FILLING:
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1/4 cup unsalted butter, softened
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2 cups powdered sugar
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1 tablespoon vanilla extract (or vanilla bean paste)
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2 tablespoons heavy whipping cream